src/openpower/test/syscall/syscall_cases.py

   1 import random
   2 from openpower.test.common import TestAccumulatorBase, skip_case
   3 from openpower.endian import bigendian
   4 from openpower.simulator.program import Program
   5 #from openpower.decoder.selectable_int import SelectableInt
   6 #from openpower.decoder.power_enums import XER_bits
   7 #from openpower.decoder.isa.caller import special_sprs
   8 from openpower.decoder.helpers import exts
   9 from openpower.test.state import ExpectedState
  10 from openpower.util import log
  11 from pathlib import Path
  12 #import gzip
  13 #import json
  14 #import sys
  15 #from hashlib import sha256
  16 #from functools import lru_cache
  17
  18 class SysCallTestCase(TestAccumulatorBase):
  19     def case_sc(self):
  20         lst = [f"sc"]
  21         print(lst)
  22         message = b'Hello world!\n'
  23         message_len = len(message)
  24         initial_regs = [0] * 32
  25         initial_regs[0] = 4 # write syscall, see ppc64 ABI
  26         initial_regs[3] = 1 # fd = 1 (stdout)
  27         # The example code stores bits 0-63 of the msg into r4
  28         # but message is actually 13 bytes, so just store 8 for now
  29         msg_8bytes = int(message[0:8].hex(), 16)
  30         initial_regs[4] =  msg_8bytes
  31         initial_regs[5] = 8 # message_len
  32         e = ExpectedState(initial_regs, pc=4)
  33         e.intregs[3] = 0x10000
  34         self.add_case(Program(lst, bigendian), initial_regs, expected=e)