isa/rv64mi/mcsr.S

   1 # See LICENSE for license details.
   2
   3 #*****************************************************************************
   4 # mcsr.S
   5 #-----------------------------------------------------------------------------
   6 #
   7 # Test various M-mode CSRs.
   8 #
   9
  10 #include "riscv_test.h"
  11 #include "test_macros.h"
  12
  13 RVTEST_RV64M
  14 RVTEST_CODE_BEGIN
  15
  16   # Check that mcpuid reports the correct XLEN
  17 #ifdef __riscv64
  18   TEST_CASE(2, a0, 0x2, csrr a0, misa; srl a0, a0, 62)
  19 #else
  20   TEST_CASE(2, a0, 0x1, csrr a0, misa; srl a0, a0, 30)
  21 #endif
  22
  23   # Check that mhartid reports 0
  24   TEST_CASE(3, a0, 0x0, csrr a0, mhartid)
  25
  26   # Check that reading the following CSRs doesn't cause an exception
  27   csrr a0, mimpid
  28   csrr a0, marchid
  29   csrr a0, mvendorid
  30
  31   # Check that writing hte following CSRs doesn't cause an exception
  32   li t0, 0
  33   csrs mtvec, t0
  34   csrs mepc, t0
  35
  36   TEST_PASSFAIL
  37
  38 RVTEST_CODE_END
  39
  40   .data
  41 RVTEST_DATA_BEGIN
  42
  43   TEST_DATA
  44
  45 RVTEST_DATA_END