isa/rv64si/scall.S

   1 # See LICENSE for license details.
   2
   3 #*****************************************************************************
   4 # scall.S
   5 #-----------------------------------------------------------------------------
   6 #
   7 # Test syscall trap.
   8 #
   9
  10 #include "riscv_test.h"
  11 #include "test_macros.h"
  12
  13 RVTEST_RV64S
  14 RVTEST_CODE_BEGIN
  15
  16 #ifdef __MACHINE_MODE
  17   #define sscratch mscratch
  18   #define sstatus mstatus
  19   #define scause mcause
  20   #define sepc mepc
  21   #define sret mret
  22   #define stvec_handler mtvec_handler
  23   #undef SSTATUS_SPP
  24   #define SSTATUS_SPP MSTATUS_MPP
  25 #endif
  26
  27   li TESTNUM, 2
  28
  29   li t0, SSTATUS_SPP
  30   csrc sstatus, t0
  31   la t0, 1f
  32   csrw sepc, t0
  33   sret
  34 1:
  35
  36   li TESTNUM, 1
  37   scall
  38   j fail
  39
  40   TEST_PASSFAIL
  41
  42   .align 2
  43   .global stvec_handler
  44 stvec_handler:
  45   li t1, CAUSE_USER_ECALL
  46   csrr t0, scause
  47   bne t0, t1, fail
  48   j pass
  49
  50 RVTEST_CODE_END
  51
  52   .data
  53 RVTEST_DATA_BEGIN
  54
  55   TEST_DATA
  56
  57 RVTEST_DATA_END