From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Fri, 23 Apr 2021 18:54:15 +0000 (+0100)
Subject: move branch test cases to openpower.test
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3511442185feda41b9b5cdc33dae875076701fd5;p=soc.git

move branch test cases to openpower.test
---

diff --git a/src/soc/fu/branch/test/test_pipe_caller.py b/src/soc/fu/branch/test/test_pipe_caller.py
index 427b280f..d144f407 100644
--- a/src/soc/fu/branch/test/test_pipe_caller.py
+++ b/src/soc/fu/branch/test/test_pipe_caller.py
@@ -6,21 +6,21 @@ from nmutil.sim_tmp_alternative import Simulator, Settle
 
 from nmigen.cli import rtlil
 import unittest
-from openpower.decoder.isa.caller import ISACaller, special_sprs
 from openpower.decoder.power_decoder import (create_pdecode)
 from openpower.decoder.power_decoder2 import (PowerDecode2)
-from openpower.decoder.power_enums import (XER_bits, Function, MicrOp)
-from openpower.decoder.selectable_int import SelectableInt
+from openpower.decoder.power_enums import Function
 from openpower.simulator.program import Program
 from openpower.decoder.isa.all import ISA
 from soc.regfile.regfiles import FastRegs
 from openpower.endian import bigendian
 
-from openpower.test.common import TestAccumulatorBase, TestCase, ALUHelpers
+from openpower.test.common import ALUHelpers
 from soc.fu.branch.pipeline import BranchBasePipe
 from soc.fu.branch.pipe_data import BranchPipeSpec
 import random
 
+from openpower.test.branch.branch_cases import BranchTestCase
+
 
 def get_rec_width(rec):
     recwidth = 0
@@ -47,90 +47,7 @@ def get_cu_inputs(dec2, sim):
     return res
 
 
-class BranchTestCase(TestAccumulatorBase):
-
-    def case_0_regression_unconditional(self):
-        for i in range(2):
-            imm = random.randrange(-1 << 23, (1 << 23)-1) * 4
-            lst = [f"bl {imm}"]
-            initial_regs = [0] * 32
-            self.add_case(Program(lst, bigendian), initial_regs)
-
-    def case_unconditional(self):
-        choices = ["b", "ba", "bl", "bla"]
-        for i in range(20):
-            choice = random.choice(choices)
-            imm = random.randrange(-1 << 23, (1 << 23)-1) * 4
-            lst = [f"{choice} {imm}"]
-            initial_regs = [0] * 32
-            self.add_case(Program(lst, bigendian), initial_regs)
-
-    def case_bc_cr(self):
-        for i in range(20):
-            bc = random.randrange(-1 << 13, (1 << 13)-1) * 4
-            bo = random.choice([0b01100, 0b00100, 0b10100])
-            bi = random.randrange(0, 31)
-            cr = random.randrange(0, (1 << 32)-1)
-            lst = [f"bc {bo}, {bi}, {bc}"]
-            initial_regs = [0] * 32
-            self.add_case(Program(lst, bigendian), initial_cr=cr)
-
-    def case_bc_ctr(self):
-        for i in range(20):
-            bc = random.randrange(-1 << 13, (1 << 13)-1) * 4
-            bo = random.choice([0, 2, 8, 10, 16, 18])
-            bi = random.randrange(0, 31)
-            cr = random.randrange(0, (1 << 32)-1)
-            ctr = random.randint(0, (1 << 32)-1)
-            lst = [f"bc {bo}, {bi}, {bc}"]
-            initial_sprs = {9: SelectableInt(ctr, 64)}
-            self.add_case(Program(lst, bigendian),
-                          initial_sprs=initial_sprs,
-                          initial_cr=cr)
-
-    def case_bc_reg(self):
-        # XXX: bcctr and bcctrl time out (irony: they're counters)
-        choices = ["bclr", "bclrl", "bcctr", "bcctrl", "bctar", "bctarl"]
-        for insn in choices:
-            for i in range(20):
-                bh = random.randrange(0, 3)
-                bo = random.choice([4, 12])
-                bi = random.randrange(0, 31)
-                cr = random.randrange(0, (1 << 32)-1)
-                ctr = random.randint(0, (1 << 32)-1)
-                lr = random.randint(0, (1 << 64)-1) & ~3
-                tar = random.randint(0, (1 << 64)-1) & ~3
-                lst = [f"{insn} {bo}, {bi}, {bh}"]
-                initial_sprs = {9: SelectableInt(ctr, 64),
-                                8: SelectableInt(lr, 64),
-                                815: SelectableInt(tar, 64)}
-                self.add_case(Program(lst, bigendian),
-                              initial_sprs=initial_sprs,
-                              initial_cr=cr)
-
-    def case_bc_microwatt_1_regression(self):
-        """bc found to be testing ctr rather than (ctr-1)
-        11fb4:   08 00 49 40     bc      2,4*cr2+gt,0x11fbc
-        cr_file.vhdl:83:13:@136835ns:(report note): Reading CR 33209703
-        """
-        lst = ["bc 2, 9, 8"]
-        initial_regs = [0] * 32
-        cr = 0x33209703
-        self.add_case(Program(lst, bigendian), initial_regs,
-                              initial_cr=cr)
-
-    def case_bc_microwatt_2_regression(self):
-        """modified version, set CTR=1 so that it hits zero in BC
-        """
-        lst = ["bc 2, 9, 8"]
-        initial_regs = [0] * 32
-        cr = 0x33209703
-        ctr = 1
-        initial_sprs = {9: SelectableInt(ctr, 64),
-                        }
-        self.add_case(Program(lst, bigendian), initial_regs,
-                              initial_sprs=initial_sprs,
-                              initial_cr=cr)
+class BranchAllCases(BranchTestCase):
 
     def case_ilang(self):
         pspec = BranchPipeSpec(id_wid=2)
@@ -142,7 +59,7 @@ class BranchTestCase(TestAccumulatorBase):
 
 class TestRunner(unittest.TestCase):
     def test_it(self):
-        test_data = BranchTestCase().test_data
+        test_data = BranchAllCases().test_data
         m = Module()
         comb = m.d.comb
         instruction = Signal(32)