shift_rot expected cases

diff --git a/src/openpower/decoder/isa/shift_rot_cases.py b/src/openpower/decoder/isa/shift_rot_cases.py
new file mode 100644 (file)
index 0000000..cc2a141
--- /dev/null
+++ b/src/openpower/decoder/isa/shift_rot_cases.py
@@ -0,0 +1,201 @@
+from openpower.test.common import TestAccumulatorBase
+from openpower.endian import bigendian
+import unittest
+from openpower.decoder.power_enums import XER_bits
+from openpower.simulator.program import Program
+from openpower.decoder.selectable_int import SelectableInt
+from openpower.test.state import ExpectedState
+
+
+class ShiftRotTestCase(TestAccumulatorBase):
+
+    def case_0_proof_regression_rlwnm(self):
+        lst = ["rlwnm 3, 1, 2, 16, 20"]
+        initial_regs = [0] * 32
+        #initial_regs[1] =0x7ffdbffb91b906b9
+        initial_regs[1] = 0x11faafff1111aa11
+        #initial_regs[2] = 31
+        initial_regs[2] = 11
+        # set expected (intregs, pc, [crregs], so, ov, ca)
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0x8800
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_srw_1(self):
+        lst = ["sraw 3, 1, 2"]
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x12345678
+        initial_regs[2] = 8
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0x123456
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_srw_2(self):
+        lst = ["sraw 3, 1, 2"]
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x82345678  # test the carry
+        initial_regs[2] = 8
+        e = ExpectedState(initial_regs, 4, ca=3)
+        e.intregs[3] = 0xffffffffff823456
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_sld_rb_too_big(self):
+        lst = ["sld 3, 1, 4"]
+        initial_regs = [0] * 32
+        initial_regs[1] = 0xffffffffffffffff
+        initial_regs[4] = 64  # too big, output should be zero
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0x0
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_sld_rb_is_zero(self):
+        lst = ["sld 3, 1, 4"]
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x8000000000000000
+        initial_regs[4] = 0  # no shift; output should equal input
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = initial_regs[1]
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_shift_once(self):
+        lst = ["slw 3, 1, 4",
+               "slw 3, 1, 2"]
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x80000000
+        initial_regs[2] = 0x40
+        initial_regs[4] = 0x00
+        e = ExpectedState(initial_regs, 8)
+        e.intregs[3] = 0x80000000
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_rlwinm_1(self):
+        lst = ["rlwinm 3, 1, 1, 31, 31"]  # Extracts sign bit
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x8fffffff
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0x1
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_rlwinm_2(self):
+        lst = ["rlwinm 3, 1, 1, 0, 30"]
+        initial_regs = [0] * 32
+        initial_regs[1] = 0xf1110001
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0xe2220002
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_rlwinm_3(self):
+        lst = ["rlwinm 3, 1, 0, 16, 31"]  # Clear high-order 16 bits
+        initial_regs = [0] * 32
+        initial_regs[1] = 0xebeb1888
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0x1888
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_rlwimi_1(self):
+        lst = ["rlwimi 3, 1, 31, 0, 0"]
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x1
+        initial_regs[3] = 0x7fffffff
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0xffffffff
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_rlwimi_2(self):
+        lst = ["rlwimi 3, 1, 16, 8, 15"]
+        initial_regs = [0] * 32
+        initial_regs[1] = 0xcc
+        initial_regs[3] = 0x7f00ffff
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0x7fccffff
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_rlwnm_1(self):
+        lst = ["rlwnm 3, 1, 2, 0, 31"]
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x111
+        initial_regs[2] = 1
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0x222
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_rlwnm_2(self):
+        lst = ["rlwnm 3, 1, 2, 8, 11"]
+        initial_regs = [0] * 32
+        initial_regs[1] = 0xfebaacda
+        initial_regs[2] = 16
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0xd00000
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_rldic_1(self):
+        lst = ["rldic 3, 1, 8, 31"]  # Simple rotate and clear
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x0100ffff00000111
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0x11100
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_rldic_2(self):
+        lst = ["rldic 3, 1, 0, 51"]  # No rotate and clear
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x0100ffff00000fff
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0xfff
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_rldicl_1(self):
+        lst = ["rldicl 3, 1, 8, 44"]  # Simple rotate with left clear
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x0100ffff00000111
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0x11101
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_rldicl_2(self):
+        lst = ["rldicl 3, 1, 32, 47"]  # Rotate right and clear
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x1000dead0000111c
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0xdead
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_rldicr_1(self):
+        lst = ["rldicr 3, 1, 16, 15"]  # Simple rotate with right clear
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x0100ffffe0000111
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0xffff000000000000
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_rldicr_2(self):
+        lst = ["rldicr 3, 1, 32, 32"]  # Rotate right and clear
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x1000caef0000dead
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0xdead00000000
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_regression_extswsli_1(self):
+        lst = [f"extswsli 3, 1, 31"]
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x5678
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0x2b3c00000000
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_regression_extswsli_2(self):
+        lst = [f"extswsli 3, 1, 7"]
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x3ffffd7377f19fdd
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0x3bf8cfee80
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)
+
+    def case_regression_extswsli_3(self):
+        lst = [f"extswsli 3, 1, 0"]
+        initial_regs = [0] * 32
+        initial_regs[1] = 0x0000010180122900
+        e = ExpectedState(initial_regs, 4)
+        e.intregs[3] = 0xffffffff80122900
+        self.add_case(Program(lst, bigendian), initial_regs, expected=e)