src/openpower/test/trap/trap_cases.py

   1 from openpower.simulator.program import Program
   2 from openpower.endian import bigendian
   3 from openpower.consts import MSR
   4 from openpower.test.state import ExpectedState
   5
   6 from openpower.test.common import TestAccumulatorBase
   7 import random
   8
   9
  10 class TrapTestCase(TestAccumulatorBase):
  11
  12     def case_1_kaivb(self):
  13         # https://bugs.libre-soc.org/show_bug.cgi?id=859
  14         lst = ["mtspr 850, 1",  # KAIVB
  15                "mfspr 2, 850",
  16                ]
  17         initial_regs = [0] * 32
  18         initial_regs[1] = 0x129518230011feed
  19         initial_sprs = {'KAIVB': 0x12345678,
  20                         }
  21         msr = 0xa000000000000003
  22         self.add_case(Program(lst, bigendian),
  23                       initial_regs, initial_sprs,
  24                                     initial_msr=msr)
  25
  26     def case_2_kaivb_test(self):
  27         # https://bugs.libre-soc.org/show_bug.cgi?id=859
  28         # sets KAIVB to 1<<13 then deliberately causes exception.
  29         # PC expected to jump to (1<<13)|0x700 *NOT* 0x700 as usual
  30         lst = ["mtspr 850, 1",  # KAIVB
  31                "tbegin.",       # deliberately use illegal instruction
  32                ]
  33         initial_regs = [0] * 32
  34         initial_regs[1] = 1<<13
  35         initial_sprs = {'KAIVB': 0x12345678,
  36                         }
  37         msr = 0xa000000000000003
  38         e = ExpectedState(pc=0x2700)
  39         e.intregs[1] = 1<<13
  40         e.msr = 0xa000000000000003 # TODO, not actually checked
  41         self.add_case(Program(lst, bigendian),
  42                       initial_regs, initial_sprs,
  43                                     initial_msr=msr,
  44                                     expected=e)
  45
  46     def case_0_hrfid(self):
  47         lst = ["hrfid"]
  48         initial_regs = [0] * 32
  49         initial_regs[1] = 1
  50         initial_sprs = {'HSRR0': 0x12345678, 'HSRR1': 0x5678}
  51         self.add_case(Program(lst, bigendian),
  52                       initial_regs, initial_sprs)
  53
  54     def case_1_rfid(self):
  55         lst = ["rfid"]
  56         initial_regs = [0] * 32
  57         initial_regs[1] = 1
  58         initial_sprs = {'SRR0': 0x12345678, 'SRR1': 0x5678}
  59         self.add_case(Program(lst, bigendian),
  60                       initial_regs, initial_sprs)
  61
  62     def case_2_rfid(self):
  63         lst = ["rfid"]
  64         initial_regs = [0] * 32
  65         initial_regs[1] = 1
  66         initial_sprs = {'SRR0': 0x12345678, 'SRR1': 0xb000000000001033}
  67         e = ExpectedState(pc=0x700)
  68         e.intregs[1] = 1
  69         e.msr = 0xb000000000001033 # TODO, not actually checked
  70         self.add_case(Program(lst, bigendian),
  71                       initial_regs, initial_sprs,
  72                                     initial_msr=0xa000000000000003,
  73                                     expected=e)
  74
  75     def case_0_trap_eq_imm(self):
  76         insns = ["twi", "tdi"]
  77         for i in range(2):
  78             choice = random.choice(insns)
  79             lst = [f"{choice} 4, 1, %d" % i]  # TO=4: trap equal
  80             initial_regs = [0] * 32
  81             initial_regs[1] = 1
  82             self.add_case(Program(lst, bigendian), initial_regs)
  83
  84     def case_0_trap_eq(self):
  85         insns = ["tw", "td"]
  86         for i in range(2):
  87             choice = insns[i]
  88             lst = [f"{choice} 4, 1, 2"]  # TO=4: trap equal
  89             initial_regs = [0] * 32
  90             initial_regs[1] = 1
  91             initial_regs[2] = 1
  92             self.add_case(Program(lst, bigendian), initial_regs)
  93
  94     def case_3_mtmsr_0(self):
  95         lst = ["mtmsr 1,0"]
  96         initial_regs = [0] * 32
  97         initial_regs[1] = 0xffffffffffffffff
  98         self.add_case(Program(lst, bigendian), initial_regs)
  99
 100     def case_3_mtmsr_1(self):
 101         lst = ["mtmsr 1,1"]
 102         initial_regs = [0] * 32
 103         initial_regs[1] = 0xffffffffffffffff
 104         self.add_case(Program(lst, bigendian), initial_regs)
 105
 106     def case_4_mtmsrd_0_linux(self):
 107         lst = ["mtmsrd 1,0"]
 108         initial_regs = [0] * 32
 109         initial_regs[1] = 0xb000000000001033
 110         self.add_case(Program(lst, bigendian), initial_regs,
 111                                     initial_msr=0xa000000000000003)
 112
 113     def case_4_mtmsrd_0(self):
 114         lst = ["mtmsrd 1,0"]
 115         initial_regs = [0] * 32
 116         initial_regs[1] = 0xffffffffffffffff
 117         self.add_case(Program(lst, bigendian), initial_regs)
 118
 119     def case_5_mtmsrd_1(self):
 120         lst = ["mtmsrd 1,1"]
 121         initial_regs = [0] * 32
 122         initial_regs[1] = 0xffffffffffffffff
 123         self.add_case(Program(lst, bigendian), initial_regs)
 124
 125     def case_6_mtmsr_priv_0(self):
 126         lst = ["mtmsr 1,0"]
 127         initial_regs = [0] * 32
 128         initial_regs[1] = 0xffffffffffffffff
 129         msr = 1 << MSR.PR  # set in "problem state"
 130         self.add_case(Program(lst, bigendian), initial_regs,
 131                       initial_msr=msr)
 132
 133     def case_7_rfid_priv_0(self):
 134         lst = ["rfid"]
 135         initial_regs = [0] * 32
 136         initial_regs[1] = 1
 137         initial_sprs = {'SRR0': 0x12345678, 'SRR1': 0x5678}
 138         msr = 1 << MSR.PR  # set in "problem state"
 139         self.add_case(Program(lst, bigendian),
 140                       initial_regs, initial_sprs,
 141                       initial_msr=msr)
 142
 143     def case_8_mfmsr(self):
 144         lst = ["mfmsr 1"]
 145         initial_regs = [0] * 32
 146         msr = (~(1 << MSR.PR)) & 0xffffffffffffffff
 147         self.add_case(Program(lst, bigendian), initial_regs,
 148                       initial_msr=msr)
 149
 150     def case_9_mfmsr_priv(self):
 151         lst = ["mfmsr 1"]
 152         initial_regs = [0] * 32
 153         msr = 1 << MSR.PR  # set in "problem state"
 154         self.add_case(Program(lst, bigendian), initial_regs,
 155                       initial_msr=msr)
 156
 157     def case_999_illegal(self):
 158         # ok, um this is a bit of a cheat: use an instruction we know
 159         # is not implemented by either ISACaller or the core
 160         lst = ["tbegin.",
 161                "mtmsr 1,1"]  # should not get executed
 162         initial_regs = [0] * 32
 163         self.add_case(Program(lst, bigendian), initial_regs)
 164