tests/cris/check_swap.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <stdint.h>
   4 #include "sys.h"
   5 #include "crisutils.h"
   6
   7 #define N 8
   8 #define W 4
   9 #define B 2
  10 #define R 1
  11
  12 static inline int cris_swap(const int mode, int x)
  13 {
  14         switch (mode)
  15         {
  16                 case N: asm ("swapn\t%0\n" : "+r" (x) : "0" (x)); break;
  17                 case W: asm ("swapw\t%0\n" : "+r" (x) : "0" (x)); break;
  18                 case B: asm ("swapb\t%0\n" : "+r" (x) : "0" (x)); break;
  19                 case R: asm ("swapr\t%0\n" : "+r" (x) : "0" (x)); break;
  20                 case B|R: asm ("swapbr\t%0\n" : "+r" (x) : "0" (x)); break;
  21                 case W|R: asm ("swapwr\t%0\n" : "+r" (x) : "0" (x)); break;
  22                 case W|B: asm ("swapwb\t%0\n" : "+r" (x) : "0" (x)); break;
  23                 case W|B|R: asm ("swapwbr\t%0\n" : "+r" (x) : "0" (x)); break;
  24                 case N|R: asm ("swapnr\t%0\n" : "+r" (x) : "0" (x)); break;
  25                 case N|B: asm ("swapnb\t%0\n" : "+r" (x) : "0" (x)); break;
  26                 case N|B|R: asm ("swapnbr\t%0\n" : "+r" (x) : "0" (x)); break;
  27                 case N|W: asm ("swapnw\t%0\n" : "+r" (x) : "0" (x)); break;
  28                 default:
  29                         err();
  30                         break;
  31         }
  32         return x;
  33 }
  34
  35 /* Made this a macro to be able to pick up the location of the errors.  */
  36 #define verify_swap(mode, val, expected, n, z)          \
  37 do {                                                    \
  38         int r;                                          \
  39         cris_tst_cc_init();                             \
  40         r = cris_swap(mode, val);                       \
  41         cris_tst_mov_cc(n, z);                          \
  42         if (r != expected)                              \
  43                 err();                                  \
  44 } while(0)
  45
  46 void check_swap(void)
  47 {
  48         /* Some of these numbers are borrowed from GDB's cris sim
  49            testsuite.  */
  50         if (cris_swap(N, 0) != 0xffffffff)
  51                 err();
  52         if (cris_swap(W, 0x12345678) != 0x56781234)
  53                 err();
  54         if (cris_swap(B, 0x12345678) != 0x34127856)
  55                 err();
  56
  57         verify_swap(R, 0x78134452, 0x1ec8224a, 0, 0);
  58         verify_swap(B, 0x78134452, 0x13785244, 0, 0);
  59         verify_swap(B|R, 0x78134452, 0xc81e4a22, 1, 0);
  60         verify_swap(W, 0x78134452, 0x44527813, 0, 0);
  61         verify_swap(W|R, 0x78134452, 0x224a1ec8, 0, 0);
  62         verify_swap(W|B|R, 0x78134452, 0x4a22c81e, 0, 0);
  63         verify_swap(N, 0x78134452, 0x87ecbbad, 1, 0);
  64         verify_swap(N|R, 0x78134452, 0xe137ddb5, 1, 0);
  65         verify_swap(N|B, 0x78134452, 0xec87adbb, 1, 0);
  66         verify_swap(N|B|R, 0x78134452, 0x37e1b5dd, 0, 0);
  67         verify_swap(N|W, 0x78134452, 0xbbad87ec, 1, 0);
  68         verify_swap(N|B|R, 0xffffffff, 0, 0, 1);
  69 }
  70
  71 int main(void)
  72 {
  73         check_swap();
  74         pass();
  75         return 0;
  76 }