none/tests/mips32/unaligned_load_store.c

   1 #include <stdio.h>
   2 unsigned int mem[] = {
   3    0xaabbccdd, 0x11223344, 0x01823194, 0x01823a08,
   4    0x00000000, 0x77ff528c, 0x77deb460, 0x00000001
   5 };
   6
   7 void printMem(char* s)
   8 {
   9    int i;
  10    printf("%s\n", s);
  11    for (i=0; i<7 ; i=i+1)
  12       printf("mem[%d]: 0x%x\n", i, mem[i]);
  13 }
  14
  15 int main ()
  16 {
  17 #if (__mips_isa_rev<6)
  18    printMem("PRE lwl");
  19    __asm__ volatile("move $a0, %0"       "\n\t"
  20                     "lw   $t0, 0($a0)"   "\n\t"
  21                     "lwl  $t0, 4($a0)"   "\n\t"
  22                     "sw   $t0, 8($a0)"   "\n\t"
  23                     "lw   $t1, 0($a0)"   "\n\t"
  24                     "lwl  $t1, 5($a0)"   "\n\t"
  25                     "sw   $t1, 12($a0)"  "\n\t"
  26                     "lw   $t2, 0($a0)"   "\n\t"
  27                     "lwl  $t2, 6($a0)"   "\n\t"
  28                     "sw   $t2, 16($a0)"  "\n\t"
  29                     "lw   $t3, 0($a0)"   "\n\t"
  30                     "lwl  $t3, 7($a0)"   "\n\t"
  31                     "sw   $t3, 20($a0)"  "\n\t"
  32                     :
  33                     : "r" (mem)
  34                     : "a0", "t0", "t1", "t2", "t3", "cc", "memory"
  35                    );
  36    printMem("POST lwl");
  37
  38    mem[0] = 0xaabbccdd;
  39    mem[1] = 0x11223344;
  40    mem[2] = 0x01823194;
  41    mem[3] = 0x01823a08;
  42    mem[4] = 0x00000000;
  43    mem[5] = 0x77ff528c;
  44    mem[6] = 0x77deb460;
  45    mem[7] = 0x00000001;
  46
  47    printMem("PRE lwr");
  48    __asm__ volatile("move $a0, %0"       "\n\t"
  49                     "lw   $t0, 0($a0)"   "\n\t"
  50                     "lwr  $t0, 4($a0)"   "\n\t"
  51                     "sw   $t0, 8($a0)"   "\n\t"
  52                     "lw   $t1, 0($a0)"   "\n\t"
  53                     "lwr  $t1, 5($a0)"   "\n\t"
  54                     "sw   $t1, 12($a0)"  "\n\t"
  55                     "lw   $t2, 0($a0)"   "\n\t"
  56                     "lwr  $t2, 6($a0)"   "\n\t"
  57                     "sw   $t2, 16($a0)"  "\n\t"
  58                     "lw   $t3, 0($a0)"   "\n\t"
  59                     "lwr  $t3, 7($a0)"   "\n\t"
  60                     "sw   $t3, 20($a0)"  "\n\t"
  61                     :
  62                     : "r" (mem)
  63                     : "a0", "t0", "t1", "t2", "t3", "cc", "memory"
  64                    );
  65    printMem("POST lwr");
  66 #endif
  67    return 0;
  68 }