isa/rv64mi/ipi.S

   1 # See LICENSE for license details.
   2
   3 #*****************************************************************************
   4 # ipi.S
   5 #-----------------------------------------------------------------------------
   6 #
   7 # Test interprocessor interrupts.
   8 #
   9
  10 #include "riscv_test.h"
  11 #include "test_macros.h"
  12
  13 RVTEST_RV64M
  14 RVTEST_CODE_BEGIN
  15
  16   # enable interrupts
  17   csrs mstatus, MSTATUS_MIE
  18   csrs mie, MIP_MSIP
  19
  20   # get a unique core id
  21   la a0, coreid
  22   li a1, 1
  23   amoadd.w a2, a1, (a0)
  24
  25   # for now, only run this on core 0
  26   1:li a3, 1
  27   bgeu a2, a3, 1b
  28
  29   # send a self-IPI
  30   csrwi mipi, 1
  31   1: j 1b
  32
  33 mtvec_handler:
  34   bnez a2, fail
  35   RVTEST_PASS
  36
  37   TEST_PASSFAIL
  38
  39 RVTEST_CODE_END
  40
  41   .data
  42 RVTEST_DATA_BEGIN
  43
  44   TEST_DATA
  45
  46 coreid: .word 0
  47 foo: .word 0
  48
  49 RVTEST_DATA_END