1 from nmutil
.formaltest
import FHDLTestCase
3 from openpower
.simulator
.program
import Program
4 from openpower
.decoder
.selectable_int
import SelectableInt
5 from openpower
.decoder
.isa
.test_runner
import (Register
, ISATestRunner
,
9 class DecoderTestCase(FHDLTestCase
):
13 initial_regs
= [0] * 32
14 initial_regs
[3] = 0x1234
15 initial_regs
[2] = 0x4321
16 with
Program(lst
, bigendian
=False) as program
:
17 sim
= self
.run_tst_program(program
, initial_regs
)
18 self
.assertEqual(sim
.gpr(1), SelectableInt(0x5555, 64))
21 lst
= ["addi 3, 0, 0x1234",
24 with
Program(lst
, bigendian
=False) as program
:
25 sim
= self
.run_tst_program(program
)
27 self
.assertEqual(sim
.gpr(1), SelectableInt(0x5555, 64))
29 def test_load_store(self
):
30 lst
= ["addi 1, 0, 0x0010",
34 with
Program(lst
, bigendian
=False) as program
:
35 sim
= self
.run_tst_program(program
)
37 self
.assertEqual(sim
.gpr(3), SelectableInt(0x1234, 64))
39 @unittest.skip("broken")
40 def test_addpcis(self
):
41 lst
= ["addpcis 1, 0x1",
44 with
Program(lst
, bigendian
=False) as program
:
45 sim
= self
.run_tst_program(program
)
46 self
.assertEqual(sim
.gpr(1), SelectableInt(0x10004, 64))
47 self
.assertEqual(sim
.gpr(2), SelectableInt(0x10008, 64))
48 self
.assertEqual(sim
.gpr(3), SelectableInt(0x1000c, 64))
50 def test_branch(self
):
51 lst
= ["ba 0xc", # branch to line 4
52 "addi 1, 0, 0x1234", # Should never execute
53 "ba 0x1000", # exit the program
54 "addi 2, 0, 0x1234", # line 4
55 "ba 0x8"] # branch to line 3
56 with
Program(lst
, bigendian
=False) as program
:
57 sim
= self
.run_tst_program(program
)
58 self
.assertEqual(sim
.pc
.CIA
, SelectableInt(0x1000, 64))
59 self
.assertEqual(sim
.gpr(1), SelectableInt(0x0, 64))
60 self
.assertEqual(sim
.gpr(2), SelectableInt(0x1234, 64))
62 def test_branch_link(self
):
68 with
Program(lst
, bigendian
=False) as program
:
69 sim
= self
.run_tst_program(program
)
70 self
.assertEqual(sim
.spr
['LR'], SelectableInt(0x4, 64))
72 def test_branch_ctr(self
):
73 lst
= ["addi 1, 0, 0x10", # target of jump
74 "mtspr 9, 1", # mtctr 1
75 "bcctr 20, 0, 0", # bctr
76 "addi 2, 0, 0x1", # should never execute
77 "addi 1, 0, 0x1234"] # target of ctr
78 with
Program(lst
, bigendian
=False) as program
:
79 sim
= self
.run_tst_program(program
)
80 self
.assertEqual(sim
.spr
['CTR'], SelectableInt(0x10, 64))
81 self
.assertEqual(sim
.gpr(1), SelectableInt(0x1234, 64))
82 self
.assertEqual(sim
.gpr(2), SelectableInt(0, 64))
84 def test_branch_cond(self
):
86 lst
= [f
"addi 1, 0, {i}", # set r1 to i
87 "cmpi cr0, 1, 1, 10", # compare r1 with 10 and store to cr0
88 "bc 12, 2, 0x8", # beq 0x8 -
89 # branch if r1 equals 10 to the nop below
90 "addi 2, 0, 0x1234", # if r1 == 10 this shouldn't execute
91 "or 0, 0, 0"] # branch target
92 with
Program(lst
, bigendian
=False) as program
:
93 sim
= self
.run_tst_program(program
)
95 self
.assertEqual(sim
.gpr(2), SelectableInt(0, 64))
97 self
.assertEqual(sim
.gpr(2), SelectableInt(0x1234, 64))
99 def test_branch_loop(self
):
100 lst
= ["addi 1, 0, 0",
104 "cmpi cr0, 1, 1, 10",
106 with
Program(lst
, bigendian
=False) as program
:
107 sim
= self
.run_tst_program(program
)
109 self
.assertEqual(sim
.gpr(2), SelectableInt(0x37, 64))
111 def test_branch_loop_ctr(self
):
112 lst
= ["addi 1, 0, 0",
114 "mtspr 9, 2", # set ctr to 7
116 "bc 16, 0, -0x4"] # bdnz to the addi above
117 with
Program(lst
, bigendian
=False) as program
:
118 sim
= self
.run_tst_program(program
)
120 self
.assertEqual(sim
.gpr(1), SelectableInt(0x23, 64))
124 def test_add_compare(self
):
125 lst
= ["addis 1, 0, 0xffff",
126 "addis 2, 0, 0xffff",
129 with
Program(lst
, bigendian
=False) as program
:
130 sim
= self
.run_tst_program(program
)
132 self
.assertEqual(sim
.gpr(3), SelectableInt(0x80000000, 64))
135 lst
= ["addis 1, 0, 0xffff",
136 "addis 2, 0, 0xffff",
139 with
Program(lst
, bigendian
=False) as program
:
140 sim
= self
.run_tst_program(program
)
141 self
.assertEqual(sim
.gpr(3), SelectableInt(0x200000, 64))
144 lst
= ["slw 1, 3, 2"]
145 initial_regs
= [0] * 32
146 initial_regs
[3] = 0xdeadbeefcafebabe
148 with
Program(lst
, bigendian
=False) as program
:
149 sim
= self
.run_tst_program(program
, initial_regs
)
150 self
.assertEqual(sim
.gpr(1), SelectableInt(0x5fd757c0, 64))
153 lst
= ["srw 1, 3, 2"]
154 initial_regs
= [0] * 32
155 initial_regs
[3] = 0xdeadbeefcafebabe
157 with
Program(lst
, bigendian
=False) as program
:
158 sim
= self
.run_tst_program(program
, initial_regs
)
159 self
.assertEqual(sim
.gpr(1), SelectableInt(0x657f5d5, 64))
161 def test_rlwinm(self
):
162 lst
= ["rlwinm 3, 1, 5, 20, 6"]
163 initial_regs
= [0] * 32
165 with
Program(lst
, bigendian
=False) as program
:
166 sim
= self
.run_tst_program(program
, initial_regs
)
167 self
.assertEqual(sim
.gpr(3), SelectableInt(0xfffffffffe000fff, 64))
169 def test_rlwimi(self
):
170 lst
= ["rlwimi 3, 1, 5, 20, 6"]
171 initial_regs
= [0] * 32
172 initial_regs
[1] = 0xffffffffdeadbeef
173 initial_regs
[3] = 0x12345678
174 with
Program(lst
, bigendian
=False) as program
:
175 sim
= self
.run_tst_program(program
, initial_regs
)
176 self
.assertEqual(sim
.gpr(3), SelectableInt(0xd5b7ddfbd4345dfb, 64))
178 def test_rldic(self
):
179 lst
= ["rldic 3, 1, 5, 20"]
180 initial_regs
= [0] * 32
181 initial_regs
[1] = 0xdeadbeefcafec0de
182 with
Program(lst
, bigendian
=False) as program
:
183 sim
= self
.run_tst_program(program
, initial_regs
)
184 self
.assertEqual(sim
.gpr(3), SelectableInt(0xdf95fd81bc0, 64))
188 initial_regs
= [0] * 32
189 initial_regs
[1] = 0xdeadbeeecaffc0de
190 with
Program(lst
, bigendian
=False) as program
:
191 sim
= self
.run_tst_program(program
, initial_regs
)
192 self
.assertEqual(sim
.gpr(2), SelectableInt(0x100000001, 64))
194 def test_popcnt(self
):
195 lst
= ["popcntb 2, 1",
199 initial_regs
= [0] * 32
200 initial_regs
[1] = 0xdeadbeefcafec0de
201 with
Program(lst
, bigendian
=False) as program
:
202 sim
= self
.run_tst_program(program
, initial_regs
)
203 self
.assertEqual(sim
.gpr(2),
204 SelectableInt(0x605060704070206, 64))
205 self
.assertEqual(sim
.gpr(3),
206 SelectableInt(0x1800000013, 64))
207 self
.assertEqual(sim
.gpr(4),
208 SelectableInt(0x2b, 64))
210 def test_cntlz(self
):
211 lst
= ["cntlzd 2, 1",
213 initial_regs
= [0] * 32
214 initial_regs
[1] = 0x0000beeecaffc0de
215 initial_regs
[3] = 0x0000000000ffc0de
216 with
Program(lst
, bigendian
=False) as program
:
217 sim
= self
.run_tst_program(program
, initial_regs
)
218 self
.assertEqual(sim
.gpr(2), SelectableInt(16, 64))
219 self
.assertEqual(sim
.gpr(4), SelectableInt(8, 64))
221 def test_cmpeqb(self
):
222 lst
= ["cmpeqb cr0, 2, 1",
224 initial_regs
= [0] * 32
225 initial_regs
[1] = 0x0102030405060708
226 initial_regs
[2] = 0x04
227 initial_regs
[3] = 0x10
228 with
Program(lst
, bigendian
=False) as program
:
229 sim
= self
.run_tst_program(program
, initial_regs
)
230 self
.assertEqual(sim
.crl
[0].get_range().value
,
232 self
.assertEqual(sim
.crl
[1].get_range().value
,
237 def test_mtcrf(self
):
239 # 0x76540000 gives expected (3+4) (2+4) (1+4) (0+4) for
241 # The positions of the CR fields have been verified using
242 # QEMU and 'cmp crx, a, b' instructions
243 lst
= ["addis 1, 0, 0x7654",
244 "mtcrf %d, 1" % (1 << (7-i
)),
246 with
Program(lst
, bigendian
=False) as program
:
247 sim
= self
.run_tst_program(program
)
250 # check CR[0]/1/2/3 as well
251 print("cr%d" % i
, sim
.crl
[i
].asint(True))
252 self
.assertTrue(SelectableInt(expected
, 4) == sim
.crl
[i
])
254 self
.assertEqual(sim
.cr
, SelectableInt(expected
<< ((7-i
)*4), 64))
256 def run_tst_program(self
, prog
, initial_regs
=[0] * 32):
257 simulator
= run_tst(prog
, initial_regs
)
262 if __name__
== "__main__":