isa/rv32si/ipi_zscale.S

   1 #*****************************************************************************
   2 # ipi.S
   3 #-----------------------------------------------------------------------------
   4 #
   5 # Test ipi interrupt.
   6 #
   7
   8 #include "riscv_test.h"
   9 #include "test_macros.h"
  10
  11 RVTEST_RV32S
  12 RVTEST_CODE_BEGIN
  13
  14   la t0, evec
  15   csrw evec, t0
  16
  17   csrw clear_ipi, x0
  18   li t1, 1<<21
  19   csrs status, t1 # turn on timer IRQ 5
  20   csrsi status, 4 # enable interrupts
  21
  22   li t1,1
  23   csrw send_ipi, t1
  24
  25   li TESTNUM, 2
  26   li a0,1000
  27 loop:
  28   div x0, x0, x0
  29   addi a0, a0, -1
  30   bne a0, x0, loop
  31   j fail # assumption is that you will get an ipi before this loop ends
  32
  33   TEST_PASSFAIL
  34
  35 evec:
  36   li t1, 0x80000000|IRQ_IPI
  37   csrr t0, cause
  38   bne t0, t1, fail
  39   j pass
  40
  41 RVTEST_CODE_END
  42
  43   .data
  44 RVTEST_DATA_BEGIN
  45
  46   TEST_DATA
  47
  48 RVTEST_DATA_END