sim/testsuite/bfin/usp.S

   1 # Blackfin testcase for USP handling
   2 # mach: bfin
   3 # sim: --environment operating
   4
   5 #include "test.h"
   6         .include "testutils.inc"
   7
   8         start
   9
  10         imm32 R5, 0x44455566
  11         imm32 R6, 0x12345678
  12         imm32 R7, 0x9abcdef0
  13
  14         imm32 p0, EVT3;
  15         loadsym r0, exception;
  16         [p0] = r0;
  17
  18         loadsym r0, usermode;
  19         reti = r0;
  20
  21         SP = R6;
  22         USP = R7;
  23         RTI;
  24
  25 usermode:
  26         # SP should now be USP
  27         R1 = SP;
  28         CC = R1 == R7;
  29         IF !CC JUMP fail;
  30
  31         # Now set SP to another value
  32         SP = R5;
  33
  34         # Move up to exception space
  35         EXCPT 0;
  36
  37 exception:
  38         # SP should be the same as original, but USP should change
  39         R1 = SP;
  40         CC = R1 == R6;
  41         IF !CC JUMP fail;
  42
  43         R1 = USP;
  44         CC = R1 == R5;
  45         IF !CC JUMP fail;
  46
  47         dbg_pass
  48
  49 fail:
  50         dbg_fail