From a61b12ca126cfc99c104bca561034a1f05db91d5 Mon Sep 17 00:00:00 2001
From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Fri, 23 Apr 2021 20:06:30 +0100
Subject: [PATCH] add spr tests

---
 src/openpower/test/spr/spr_cases.py | 96 +++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 src/openpower/test/spr/spr_cases.py

diff --git a/src/openpower/test/spr/spr_cases.py b/src/openpower/test/spr/spr_cases.py
new file mode 100644
index 00000000..932542c0
--- /dev/null
+++ b/src/openpower/test/spr/spr_cases.py
@@ -0,0 +1,96 @@
+from openpower.simulator.program import Program
+from openpower.decoder.isa.all import ISA
+from openpower.endian import bigendian
+from openpower.consts import MSR
+
+
+from openpower.test.common import TestAccumulatorBase, skip_case
+import random
+
+
+class SPRTestCase(TestAccumulatorBase):
+
+    def case_1_mfspr(self):
+        lst = ["mfspr 1, 26",  # SRR0
+               "mfspr 2, 27",  # SRR1
+               "mfspr 3, 8",  # LR
+               "mfspr 4, 1", ]  # XER
+        initial_regs = [0] * 32
+        initial_sprs = {'SRR0': 0x12345678, 'SRR1': 0x5678, 'LR': 0x1234,
+                        'XER': 0xe00c0000}
+        self.add_case(Program(lst, bigendian),
+                      initial_regs, initial_sprs)
+
+    def case_1_mtspr(self):
+        lst = ["mtspr 26, 1",  # SRR0
+               "mtspr 27, 2",  # SRR1
+               "mtspr 1, 3",  # XER
+               "mtspr 9, 4", ]  # CTR
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x129518230011feed
+        initial_regs[2] = 0x123518230011feed
+        initial_regs[3] = 0xe00c0000
+        initial_regs[4] = 0x1010101010101010
+        initial_sprs = {'SRR0': 0x12345678, 'SRR1': 0x5678, 'LR': 0x1234,
+                        'XER': 0x0}
+        self.add_case(Program(lst, bigendian),
+                      initial_regs, initial_sprs)
+
+    def case_2_mtspr_mfspr(self):
+        lst = ["mtspr 26, 1",  # SRR0
+               "mtspr 27, 2",  # SRR1
+               "mtspr 1, 3",  # XER
+               "mtspr 9, 4",  # CTR
+               "mfspr 2, 26",  # SRR0
+               "mfspr 3, 27",  # and into reg 2
+               "mfspr 4, 1",  # XER
+               "mfspr 5, 9", ]  # CTR
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x129518230011feed
+        initial_regs[2] = 0x123518230011feed
+        initial_regs[3] = 0xe00c0000
+        initial_regs[4] = 0x1010101010101010
+        initial_sprs = {'SRR0': 0x12345678, 'SRR1': 0x5678, 'LR': 0x1234,
+                        'XER': 0x0}
+        self.add_case(Program(lst, bigendian),
+                      initial_regs, initial_sprs)
+
+    # TODO XXX whoops...
+    @skip_case("spr does not have TRAP in it. has to be done another way")
+    def case_3_mtspr_priv(self):
+        lst = ["mtspr 26, 1",  # SRR0
+               "mtspr 27, 2",  # SRR1
+               "mtspr 1, 3",  # XER
+               "mtspr 9, 4", ]  # CTR
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x129518230011feed
+        initial_regs[2] = 0x123518230011feed
+        initial_regs[3] = 0xe00c0000
+        initial_regs[4] = 0x1010101010101010
+        initial_sprs = {'SRR0': 0x12345678, 'SRR1': 0x5678, 'LR': 0x1234,
+                        'XER': 0x0}
+        msr = 1 << MSR.PR
+        self.add_case(Program(lst, bigendian),
+                      initial_regs, initial_sprs, initial_msr=msr)
+
+    def case_4_mfspr_slow(self):
+        lst = ["mfspr 1, 272",    # SPRG0
+               "mfspr 4, 273", ]  # SPRG1
+        initial_regs = [0] * 32
+        initial_sprs = {'SPRG0_priv': 0x12345678, 'SPRG1_priv': 0x5678,
+                        }
+        self.add_case(Program(lst, bigendian),
+                      initial_regs, initial_sprs)
+
+    def case_5_mtspr(self):
+        lst = ["mtspr 272, 1",  # SPRG0
+               "mtspr 273, 2",  # SPRG1
+               ]
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x129518230011feed
+        initial_regs[2] = 0x123518230011fee0
+        initial_sprs = {'SPRG0_priv': 0x12345678, 'SPRG1_priv': 0x5678,
+                        }
+        self.add_case(Program(lst, bigendian),
+                      initial_regs, initial_sprs)
+
-- 
2.30.2