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         e = ExpectedState(pc=4)
  36         e.intregs[1] = 0x833652d96c7c0058
  37         e.intregs[2] = 0x1c27ecff8a086c1a
  38         e.intregs[3] = 0x98f19a261d8c6bc2
  39         self.add_case(Program(lst, bigendian), initial_regs, expected=e)
  40         lst = [f"extsb 3, 1"]
  41         initial_regs = [0] * 32
  42         initial_regs[1] = 0x7f9497aaff900ea0
  43         e = ExpectedState(pc=4)
  44         e.intregs[1] = 0x7f9497aaff900ea0
  45         e.intregs[3] = 0xffffffffffffffa0
  46         self.add_case(Program(lst, bigendian), initial_regs, expected=e)
  47         lst = [f"add. 3, 1, 2"]
  48         initial_regs = [0] * 32
  49         initial_regs[1] = 0xc523e996a8ff6215
  50         initial_regs[2] = 0xe1e5b9cc9864c4a8
  51         self.add_case(Program(lst, bigendian), initial_regs)
  52         lst = [f"add 3, 1, 2"]
  53         initial_regs = [0] * 32
  54         initial_regs[1] = 0x2e08ae202742baf8
  55         initial_regs[2] = 0x86c43ece9efe5baa
  56         self.add_case(Program(lst, bigendian), initial_regs)
  57
  58     def case_rand(self):
  59         insns = ["add", "add.", "subf"]
  60         for i in range(40):
  61             choice = random.choice(insns)
  62             lst = [f"{choice} 3, 1, 2"]
  63             initial_regs = [0] * 32
  64             initial_regs[1] = random.randint(0, (1 << 64)-1)
  65             initial_regs[2] = random.randint(0, (1 << 64)-1)
  66             self.add_case(Program(lst, bigendian), initial_regs)
  67
  68     def case_addme_ca_0(self):
  69         insns = ["addme", "addme.", "addmeo", "addmeo."]
  70         for choice in insns:
  71             lst = [f"{choice} 6, 16"]
  72             for value in [0x7ffffffff,
  73                           0xffff80000]:
  74                 initial_regs = [0] * 32
  75                 initial_regs[16] = value
  76                 initial_sprs = {}
  77                 xer = SelectableInt(0, 64)
  78                 xer[XER_bits['CA']] = 0
  79                 initial_sprs[special_sprs['XER']] = xer
  80                 self.add_case(Program(lst, bigendian),
  81                               initial_regs, initial_sprs)
  82
  83     def case_addme_ca_1(self):
  84         insns = ["addme", "addme.", "addmeo", "addmeo."]
  85         for choice in insns:
  86             lst = [f"{choice} 6, 16"]
  87             for value in [0x7ffffffff, # fails, bug #476
  88                           0xffff80000]:
  89                 initial_regs = [0] * 32
  90                 initial_regs[16] = value
  91                 initial_sprs = {}
  92                 xer = SelectableInt(0, 64)
  93                 xer[XER_bits['CA']] = 1
  94                 initial_sprs[special_sprs['XER']] = xer
  95                 self.add_case(Program(lst, bigendian),
  96                               initial_regs, initial_sprs)
  97
  98     def case_addme_ca_so_3(self):
  99         """bug where SO does not get passed through to CR0
 100         """
 101         lst = ["addme. 6, 16"]
 102         initial_regs = [0] * 32
 103         initial_regs[16] = 0x7ffffffff
 104         initial_sprs = {}
 105         xer = SelectableInt(0, 64)
 106         xer[XER_bits['CA']] = 1
 107         xer[XER_bits['SO']] = 1
 108         initial_sprs[special_sprs['XER']] = xer
 109         self.add_case(Program(lst, bigendian),
 110                       initial_regs, initial_sprs)
 111
 112     def case_addze(self):
 113         insns = ["addze", "addze.", "addzeo", "addzeo."]
 114         for choice in insns:
 115             lst = [f"{choice} 6, 16"]
 116             initial_regs = [0] * 32
 117             initial_regs[16] = 0x00ff00ff00ff0080
 118             self.add_case(Program(lst, bigendian), initial_regs)
 119
 120         self.add_case(Program(lst, bigendian), initial_regs)
 121
 122     def case_addis_nonzero_r0_regression(self):
 123         lst = [f"addis 3, 0, 1"]
 124         print(lst)
 125         initial_regs = [0] * 32
 126         initial_regs[0] = 5
 127         e = ExpectedState(initial_regs, pc=4)
 128         e.intregs[3] = 0x10000
 129         self.add_case(Program(lst, bigendian), initial_regs, expected=e)
 130
 131     def case_addis_nonzero_r0(self):
 132         for i in range(10):
 133             imm = random.randint(-(1 << 15), (1 << 15)-1)
 134             lst = [f"addis 3, 0, {imm}"]
 135             print(lst)
 136             initial_regs = [0] * 32
 137             initial_regs[0] = random.randint(0, (1 << 64)-1)
 138             self.add_case(Program(lst, bigendian), initial_regs)
 139
 140     def case_rand_imm(self):
 141         insns = ["addi", "addis", "subfic"]
 142         for i in range(10):
 143             choice = random.choice(insns)
 144             imm = random.randint(-(1 << 15), (1 << 15)-1)
 145             lst = [f"{choice} 3, 1, {imm}"]
 146             print(lst)
 147             initial_regs = [0] * 32
 148             initial_regs[1] = random.randint(0, (1 << 64)-1)
 149             self.add_case(Program(lst, bigendian), initial_regs)
 150
 151     def case_0_adde(self):
 152         lst = ["adde. 5, 6, 7"]
 153         for i in range(10):
 154             initial_regs = [0] * 32
 155             initial_regs[6] = random.randint(0, (1 << 64)-1)
 156             initial_regs[7] = random.randint(0, (1 << 64)-1)
 157             initial_sprs = {}
 158             xer = SelectableInt(0, 64)
 159             xer[XER_bits['CA']] = 1
 160             initial_sprs[special_sprs['XER']] = xer
 161             self.add_case(Program(lst, bigendian),
 162                           initial_regs, initial_sprs)
 163
 164     def case_cmp(self):
 165         lst = ["subf. 1, 6, 7",
 166                "cmp cr2, 1, 6, 7"]
 167         initial_regs = [0] * 32
 168         initial_regs[6] = 0x10
 169         initial_regs[7] = 0x05
 170         self.add_case(Program(lst, bigendian), initial_regs, {})
 171
 172     def case_cmp2(self):
 173         lst = ["cmp cr2, 0, 2, 3"]
 174         initial_regs = [0] * 32
 175         initial_regs[2] = 0xffffffffaaaaaaaa
 176         initial_regs[3] = 0x00000000aaaaaaaa
 177         self.add_case(Program(lst, bigendian), initial_regs, {})
 178
 179         lst = ["cmp cr2, 0, 4, 5"]
 180         initial_regs = [0] * 32
 181         initial_regs[4] = 0x00000000aaaaaaaa
 182         initial_regs[5] = 0xffffffffaaaaaaaa
 183         self.add_case(Program(lst, bigendian), initial_regs, {})
 184
 185     def case_cmp3(self):
 186         lst = ["cmp cr2, 1, 2, 3"]
 187         initial_regs = [0] * 32
 188         initial_regs[2] = 0xffffffffaaaaaaaa
 189         initial_regs[3] = 0x00000000aaaaaaaa
 190         self.add_case(Program(lst, bigendian), initial_regs, {})
 191
 192         lst = ["cmp cr2, 1, 4, 5"]
 193         initial_regs = [0] * 32
 194         initial_regs[4] = 0x00000000aaaaaaaa
 195         initial_regs[5] = 0xffffffffaaaaaaaa
 196         self.add_case(Program(lst, bigendian), initial_regs, {})
 197
 198     def case_cmpl_microwatt_0(self):
 199         """microwatt 1.bin:
 200            115b8:   40 50 d1 7c     .long 0x7cd15040 # cmpl 6, 0, 17, 10
 201             register_file.vhdl: Reading GPR 11 000000000001C026
 202             register_file.vhdl: Reading GPR 0A FEDF3FFF0001C025
 203             cr_file.vhdl: Reading CR 35055050
 204             cr_file.vhdl: Writing 35055058 to CR mask 01 35055058
 205         """
 206
 207         lst = ["cmpl 6, 0, 17, 10"]
 208         initial_regs = [0] * 32
 209         initial_regs[0x11] = 0x1c026
 210         initial_regs[0xa] =  0xFEDF3FFF0001C025
 211         XER = 0xe00c0000
 212         CR = 0x35055050
 213
 214         self.add_case(Program(lst, bigendian), initial_regs,
 215                                 initial_sprs = {'XER': XER},
 216                                 initial_cr = CR)
 217
 218     def case_cmpl_microwatt_0_disasm(self):
 219         """microwatt 1.bin: disassembled version
 220            115b8:   40 50 d1 7c     .long 0x7cd15040 # cmpl 6, 0, 17, 10
 221             register_file.vhdl: Reading GPR 11 000000000001C026
 222             register_file.vhdl: Reading GPR 0A FEDF3FFF0001C025
 223             cr_file.vhdl: Reading CR 35055050
 224             cr_file.vhdl: Writing 35055058 to CR mask 01 35055058
 225         """
 226
 227         dis = ["cmpl 6, 0, 17, 10"]
 228         lst = bytes([0x40, 0x50, 0xd1, 0x7c]) # 0x7cd15040
 229         initial_regs = [0] * 32
 230         initial_regs[0x11] = 0x1c026
 231         initial_regs[0xa] =  0xFEDF3FFF0001C025
 232         XER = 0xe00c0000
 233         CR = 0x35055050
 234
 235         p = Program(lst, bigendian)
 236         p.assembly = '\n'.join(dis)+'\n'
 237         self.add_case(p, initial_regs,
 238                                 initial_sprs = {'XER': XER},
 239                                 initial_cr = CR)
 240
 241     def case_cmplw_microwatt_1(self):
 242         """microwatt 1.bin:
 243            10d94:   40 20 96 7c     cmplw   cr1,r22,r4
 244             gpr: 00000000ffff6dc1 <- r4
 245             gpr: 0000000000000000 <- r22
 246         """
 247
 248         lst = ["cmpl 1, 0, 22, 4"]
 249         initial_regs = [0] * 32
 250         initial_regs[4] = 0xffff6dc1
 251         initial_regs[22] = 0
 252         XER = 0xe00c0000
 253         CR = 0x50759999
 254
 255         self.add_case(Program(lst, bigendian), initial_regs,
 256                                 initial_sprs = {'XER': XER},
 257                                 initial_cr = CR)
 258
 259     def case_cmpli_microwatt(self):
 260         """microwatt 1.bin: cmpli
 261            123ac:   9c 79 8d 2a     cmpli   cr5,0,r13,31132
 262             gpr: 00000000301fc7a7 <- r13
 263             cr : 0000000090215393
 264             xer: so 1 ca 0 32 0 ov 0 32 0
 265
 266         """
 267
 268         lst = ["cmpli 5, 0, 13, 31132"]
 269         initial_regs = [0] * 32
 270         initial_regs[13] = 0x301fc7a7
 271         XER = 0xe00c0000
 272         CR = 0x90215393
 273
 274         self.add_case(Program(lst, bigendian), initial_regs,
 275                                 initial_sprs = {'XER': XER},
 276                                 initial_cr = CR)
 277
 278     def case_extsb(self):
 279         insns = ["extsb", "extsh", "extsw"]
 280         for i in range(10):
 281             choice = random.choice(insns)
 282             lst = [f"{choice} 3, 1"]
 283             print(lst)
 284             initial_regs = [0] * 32
 285             initial_regs[1] = random.randint(0, (1 << 64)-1)
 286             self.add_case(Program(lst, bigendian), initial_regs)
 287
 288     def case_cmpeqb(self):
 289         lst = ["cmpeqb cr1, 1, 2"]
 290         for i in range(20):
 291             initial_regs = [0] * 32
 292             initial_regs[1] = i
 293             initial_regs[2] = 0x0001030507090b0f
 294             self.add_case(Program(lst, bigendian), initial_regs, {})
 295