user/test/powerpc/io.S

   1 #define SPRN_MMUCR 0x3b2
   2
   3 #define TLBWORD0 0xf0000210
   4 #define TLBWORD1 0xf0000000
   5 #define TLBWORD2 0x00000003
   6
   7 .global _start
   8 _start:
   9         li      r4, 0
  10         mtspr   SPRN_MMUCR, r4
  11
  12         li      r3, 2
  13
  14         lis     r4, TLBWORD0@h
  15         ori     r4, r4, TLBWORD0@l
  16         tlbwe   r4, r3, 0
  17
  18         lis     r4, TLBWORD1@h
  19         ori     r4, r4, TLBWORD1@l
  20         tlbwe   r4, r3, 1
  21
  22         lis     r4, TLBWORD2@h
  23         ori     r4, r4, TLBWORD2@l
  24         tlbwe   r4, r3, 2
  25
  26         lis     r3, 0xf000
  27         lis     r4, 0x1234
  28         ori     r4, r4, 0x5678
  29         stb     r4, 0(r3)
  30         lbz     r5, 0(r3)
  31
  32         b       .