src/openpower/test/alu/alu_cases.py

   1 import random
   2 from openpower.test.common import TestAccumulatorBase
   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.test.state import ExpectedState
   9 import unittest
  10
  11
  12 class ALUTestCase(TestAccumulatorBase):
  13
  14     def case_1_regression(self):
  15         lst = [f"extsw 3, 1"]
  16         initial_regs = [0] * 32
  17         initial_regs[1] = 0xb6a1fc6c8576af91
  18         e = ExpectedState(pc=4)
  19         e.intregs[1] = 0xb6a1fc6c8576af91
  20         e.intregs[3] = 0xffffffff8576af91
  21         self.add_case(Program(lst, bigendian), initial_regs, expected=e)
  22         lst = [f"subf 3, 1, 2"]
  23         initial_regs = [0] * 32
  24         initial_regs[1] = 0x3d7f3f7ca24bac7b
  25         initial_regs[2] = 0xf6b2ac5e13ee15c2
  26         e = ExpectedState(pc=4)
  27         e.intregs[1] = 0x3d7f3f7ca24bac7b
  28         e.intregs[2] = 0xf6b2ac5e13ee15c2
  29         e.intregs[3] = 0xb9336ce171a26947
  30         self.add_case(Program(lst, bigendian), initial_regs, expected=e)
  31         lst = [f"subf 3, 1, 2"]
  32         initial_regs = [0] * 32
  33         initial_regs[1] = 0x833652d96c7c0058
  34         initial_regs[2] = 0x1c27ecff8a086c1a
  35         self.add_case(Program(lst, bigendian), initial_regs)
  36         lst = [f"extsb 3, 1"]
  37         initial_regs = [0] * 32
  38         initial_regs[1] = 0x7f9497aaff900ea0
  39         self.add_case(Program(lst, bigendian), initial_regs)
  40         lst = [f"add. 3, 1, 2"]
  41         initial_regs = [0] * 32
  42         initial_regs[1] = 0xc523e996a8ff6215
  43         initial_regs[2] = 0xe1e5b9cc9864c4a8
  44         self.add_case(Program(lst, bigendian), initial_regs)
  45         lst = [f"add 3, 1, 2"]
  46         initial_regs = [0] * 32
  47         initial_regs[1] = 0x2e08ae202742baf8
  48         initial_regs[2] = 0x86c43ece9efe5baa
  49         self.add_case(Program(lst, bigendian), initial_regs)
  50
  51     def case_rand(self):
  52         insns = ["add", "add.", "subf"]
  53         for i in range(40):
  54             choice = random.choice(insns)
  55             lst = [f"{choice} 3, 1, 2"]
  56             initial_regs = [0] * 32
  57             initial_regs[1] = random.randint(0, (1 << 64)-1)
  58             initial_regs[2] = random.randint(0, (1 << 64)-1)
  59             self.add_case(Program(lst, bigendian), initial_regs)
  60
  61     def case_addme_ca_0(self):
  62         insns = ["addme", "addme.", "addmeo", "addmeo."]
  63         for choice in insns:
  64             lst = [f"{choice} 6, 16"]
  65             for value in [0x7ffffffff,
  66                           0xffff80000]:
  67                 initial_regs = [0] * 32
  68                 initial_regs[16] = value
  69                 initial_sprs = {}
  70                 xer = SelectableInt(0, 64)
  71                 xer[XER_bits['CA']] = 0
  72                 initial_sprs[special_sprs['XER']] = xer
  73                 self.add_case(Program(lst, bigendian),
  74                               initial_regs, initial_sprs)
  75
  76     def case_addme_ca_1(self):
  77         insns = ["addme", "addme.", "addmeo", "addmeo."]
  78         for choice in insns:
  79             lst = [f"{choice} 6, 16"]
  80             for value in [0x7ffffffff, # fails, bug #476
  81                           0xffff80000]:
  82                 initial_regs = [0] * 32
  83                 initial_regs[16] = value
  84                 initial_sprs = {}
  85                 xer = SelectableInt(0, 64)
  86                 xer[XER_bits['CA']] = 1
  87                 initial_sprs[special_sprs['XER']] = xer
  88                 self.add_case(Program(lst, bigendian),
  89                               initial_regs, initial_sprs)
  90
  91     def case_addme_ca_so_3(self):
  92         """bug where SO does not get passed through to CR0
  93         """
  94         lst = ["addme. 6, 16"]
  95         initial_regs = [0] * 32
  96         initial_regs[16] = 0x7ffffffff
  97         initial_sprs = {}
  98         xer = SelectableInt(0, 64)
  99         xer[XER_bits['CA']] = 1
 100         xer[XER_bits['SO']] = 1
 101         initial_sprs[special_sprs['XER']] = xer
 102         self.add_case(Program(lst, bigendian),
 103                       initial_regs, initial_sprs)
 104
 105     def case_addze(self):
 106         insns = ["addze", "addze.", "addzeo", "addzeo."]
 107         for choice in insns:
 108             lst = [f"{choice} 6, 16"]
 109             initial_regs = [0] * 32
 110             initial_regs[16] = 0x00ff00ff00ff0080
 111             self.add_case(Program(lst, bigendian), initial_regs)
 112
 113         self.add_case(Program(lst, bigendian), initial_regs)
 114
 115     def case_addis_nonzero_r0_regression(self):
 116         lst = [f"addis 3, 0, 1"]
 117         print(lst)
 118         initial_regs = [0] * 32
 119         initial_regs[0] = 5
 120         e = ExpectedState(initial_regs, pc=4)
 121         e.intregs[3] = 0x10000
 122         self.add_case(Program(lst, bigendian), initial_regs, expected=e)
 123
 124     def case_addis_nonzero_r0(self):
 125         for i in range(10):
 126             imm = random.randint(-(1 << 15), (1 << 15)-1)
 127             lst = [f"addis 3, 0, {imm}"]
 128             print(lst)
 129             initial_regs = [0] * 32
 130             initial_regs[0] = random.randint(0, (1 << 64)-1)
 131             self.add_case(Program(lst, bigendian), initial_regs)
 132
 133     def case_rand_imm(self):
 134         insns = ["addi", "addis", "subfic"]
 135         for i in range(10):
 136             choice = random.choice(insns)
 137             imm = random.randint(-(1 << 15), (1 << 15)-1)
 138             lst = [f"{choice} 3, 1, {imm}"]
 139             print(lst)
 140             initial_regs = [0] * 32
 141             initial_regs[1] = random.randint(0, (1 << 64)-1)
 142             self.add_case(Program(lst, bigendian), initial_regs)
 143
 144     def case_0_adde(self):
 145         lst = ["adde. 5, 6, 7"]
 146         for i in range(10):
 147             initial_regs = [0] * 32
 148             initial_regs[6] = random.randint(0, (1 << 64)-1)
 149             initial_regs[7] = random.randint(0, (1 << 64)-1)
 150             initial_sprs = {}
 151             xer = SelectableInt(0, 64)
 152             xer[XER_bits['CA']] = 1
 153             initial_sprs[special_sprs['XER']] = xer
 154             self.add_case(Program(lst, bigendian),
 155                           initial_regs, initial_sprs)
 156
 157     def case_cmp(self):
 158         lst = ["subf. 1, 6, 7",
 159                "cmp cr2, 1, 6, 7"]
 160         initial_regs = [0] * 32
 161         initial_regs[6] = 0x10
 162         initial_regs[7] = 0x05
 163         self.add_case(Program(lst, bigendian), initial_regs, {})
 164
 165     def case_cmp2(self):
 166         lst = ["cmp cr2, 0, 2, 3"]
 167         initial_regs = [0] * 32
 168         initial_regs[2] = 0xffffffffaaaaaaaa
 169         initial_regs[3] = 0x00000000aaaaaaaa
 170         self.add_case(Program(lst, bigendian), initial_regs, {})
 171
 172         lst = ["cmp cr2, 0, 4, 5"]
 173         initial_regs = [0] * 32
 174         initial_regs[4] = 0x00000000aaaaaaaa
 175         initial_regs[5] = 0xffffffffaaaaaaaa
 176         self.add_case(Program(lst, bigendian), initial_regs, {})
 177
 178     def case_cmp3(self):
 179         lst = ["cmp cr2, 1, 2, 3"]
 180         initial_regs = [0] * 32
 181         initial_regs[2] = 0xffffffffaaaaaaaa
 182         initial_regs[3] = 0x00000000aaaaaaaa
 183         self.add_case(Program(lst, bigendian), initial_regs, {})
 184
 185         lst = ["cmp cr2, 1, 4, 5"]
 186         initial_regs = [0] * 32
 187         initial_regs[4] = 0x00000000aaaaaaaa
 188         initial_regs[5] = 0xffffffffaaaaaaaa
 189         self.add_case(Program(lst, bigendian), initial_regs, {})
 190
 191     def case_cmpl_microwatt_0(self):
 192         """microwatt 1.bin:
 193            115b8:   40 50 d1 7c     .long 0x7cd15040 # cmpl 6, 0, 17, 10
 194             register_file.vhdl: Reading GPR 11 000000000001C026
 195             register_file.vhdl: Reading GPR 0A FEDF3FFF0001C025
 196             cr_file.vhdl: Reading CR 35055050
 197             cr_file.vhdl: Writing 35055058 to CR mask 01 35055058
 198         """
 199
 200         lst = ["cmpl 6, 0, 17, 10"]
 201         initial_regs = [0] * 32
 202         initial_regs[0x11] = 0x1c026
 203         initial_regs[0xa] =  0xFEDF3FFF0001C025
 204         XER = 0xe00c0000
 205         CR = 0x35055050
 206
 207         self.add_case(Program(lst, bigendian), initial_regs,
 208                                 initial_sprs = {'XER': XER},
 209                                 initial_cr = CR)
 210
 211     def case_cmpl_microwatt_0_disasm(self):
 212         """microwatt 1.bin: disassembled version
 213            115b8:   40 50 d1 7c     .long 0x7cd15040 # cmpl 6, 0, 17, 10
 214             register_file.vhdl: Reading GPR 11 000000000001C026
 215             register_file.vhdl: Reading GPR 0A FEDF3FFF0001C025
 216             cr_file.vhdl: Reading CR 35055050
 217             cr_file.vhdl: Writing 35055058 to CR mask 01 35055058
 218         """
 219
 220         dis = ["cmpl 6, 0, 17, 10"]
 221         lst = bytes([0x40, 0x50, 0xd1, 0x7c]) # 0x7cd15040
 222         initial_regs = [0] * 32
 223         initial_regs[0x11] = 0x1c026
 224         initial_regs[0xa] =  0xFEDF3FFF0001C025
 225         XER = 0xe00c0000
 226         CR = 0x35055050
 227
 228         p = Program(lst, bigendian)
 229         p.assembly = '\n'.join(dis)+'\n'
 230         self.add_case(p, initial_regs,
 231                                 initial_sprs = {'XER': XER},
 232                                 initial_cr = CR)
 233
 234     def case_cmplw_microwatt_1(self):
 235         """microwatt 1.bin:
 236            10d94:   40 20 96 7c     cmplw   cr1,r22,r4
 237             gpr: 00000000ffff6dc1 <- r4
 238             gpr: 0000000000000000 <- r22
 239         """
 240
 241         lst = ["cmpl 1, 0, 22, 4"]
 242         initial_regs = [0] * 32
 243         initial_regs[4] = 0xffff6dc1
 244         initial_regs[22] = 0
 245         XER = 0xe00c0000
 246         CR = 0x50759999
 247
 248         self.add_case(Program(lst, bigendian), initial_regs,
 249                                 initial_sprs = {'XER': XER},
 250                                 initial_cr = CR)
 251
 252     def case_cmpli_microwatt(self):
 253         """microwatt 1.bin: cmpli
 254            123ac:   9c 79 8d 2a     cmpli   cr5,0,r13,31132
 255             gpr: 00000000301fc7a7 <- r13
 256             cr : 0000000090215393
 257             xer: so 1 ca 0 32 0 ov 0 32 0
 258
 259         """
 260
 261         lst = ["cmpli 5, 0, 13, 31132"]
 262         initial_regs = [0] * 32
 263         initial_regs[13] = 0x301fc7a7
 264         XER = 0xe00c0000
 265         CR = 0x90215393
 266
 267         self.add_case(Program(lst, bigendian), initial_regs,
 268                                 initial_sprs = {'XER': XER},
 269                                 initial_cr = CR)
 270
 271     def case_extsb(self):
 272         insns = ["extsb", "extsh", "extsw"]
 273         for i in range(10):
 274             choice = random.choice(insns)
 275             lst = [f"{choice} 3, 1"]
 276             print(lst)
 277             initial_regs = [0] * 32
 278             initial_regs[1] = random.randint(0, (1 << 64)-1)
 279             self.add_case(Program(lst, bigendian), initial_regs)
 280
 281     def case_cmpeqb(self):
 282         lst = ["cmpeqb cr1, 1, 2"]
 283         for i in range(20):
 284             initial_regs = [0] * 32
 285             initial_regs[1] = i
 286             initial_regs[2] = 0x0001030507090b0f
 287             self.add_case(Program(lst, bigendian), initial_regs, {})
 288