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TestCondExec.py
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TestCondExec.py
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import unittest
import ARMCPU
import armv6instrdecode
import globals
import utils
import logging
logfile = 'TestCondExec.log'
with open(logfile, 'w'):
pass
logging.basicConfig(filename=logfile,level=logging.DEBUG)
# 0000 EQ Equal / equals zero Z
# 0001 NE Not equal !Z
# 0010 CS / HS Carry set / unsigned higher or same C
# 0011 CC / LO Carry clear / unsigned lower !C
# 0100 MI Minus / negative N
# 0101 PL Plus / positive or zero !N
# 0110 VS Overflow V
# 0111 VC No overflow !V
# 1000 HI Unsigned higher C and !Z
# 1001 LS Unsigned lower or same !C or Z
# 1010 GE Signed greater than or equal N == V
# 1011 LT Signed less than N != V
# 1100 GT Signed greater than !Z and (N == V)
# 1101 LE Signed less than or equal Z or (N != V)
# 1110 AL Always (default) any
class TestDecode(unittest.TestCase):
"""Instructions"""
# preparing to test
def setUp(self):
""" Setting up for the test """
self.addr = 0
# ending the test
def tearDown(self):
"""Cleaning up after the test"""
def testCondMet(self):
# No condition met (always)
globals.regs[globals.CPSR] = 0
cm = armv6instrdecode.conditionMet(self, ARMCPU.CC_AL)
self.assertEqual(cm, 1L, cm)
# EQ
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.ZEROBIT
logging.debug(utils.getCSPRString(self))
cm = armv6instrdecode.conditionMet(self, ARMCPU.CC_EQ)
self.assertEqual(cm, 1L, cm)
def testCondExec(self):
""" basic test:
set cond code
setup reg with value
setup mov imm with value2
exec mov
check reg for """
# 0000 EQ Equal / equals zero Z
logging.debug("0000 EQ Equal / equals zero Z")
logging.debug("--- Bit set, exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.ZEROBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b00000011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
logging.debug("--- Bit not set, skip exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b00000011101000000000000011111110, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:00000000", reg)
# 0001 NE Not equal !Z
logging.debug("0001 NE Not equal !Z")
logging.debug("--- Bit clear, exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b00010011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
logging.debug("--- Bit not set, skip exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.ZEROBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b00010011101000000000000011111110, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:00000000", reg)
# 0010 CS / HS Carry set / unsigned higher or same C
logging.debug("0010 CS / HS Carry set / unsigned higher or same C")
logging.debug("--- Bit set, exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.CARRYBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b00100011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
logging.debug("--- Bit not set, skip exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b00100011101000000000000011111110, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:00000000", reg)
# 0011 CC / LO Carry clear / unsigned lower !C
logging.debug("0011 CC / LO Carry clear / unsigned lower !C")
logging.debug("--- Bit clear, exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b00110011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
logging.debug("--- Bit not set, skip exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.CARRYBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b00110011101000000000000011111110, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:00000000", reg)
# 0100 MI Minus / negative N
logging.debug("0100 MI Minus / negative N")
logging.debug("--- Bit set, exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.NEGATIVEBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b01000011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
logging.debug("--- Bit not set, skip exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b01000011101000000000000011111110, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:00000000", reg)
# 0101 PL Plus / positive or zero !N
logging.debug("0101 PL Plus / positive or zero !N")
logging.debug("--- Bit clear, exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b01010011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
logging.debug("--- Bit not set, skip exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.NEGATIVEBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b01010011101000000000000011111110, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:00000000", reg)
# 0110 VS Overflow V
logging.debug("0110 VS Overflow V")
logging.debug("--- Bit set, exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.OVERBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b01100011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
logging.debug("--- Bit not set, skip exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b01100011101000000000000011111110, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:00000000", reg)
# 0111 VC No overflow !V
logging.debug("0111 VC No overflow !V")
logging.debug("--- Bit clear, exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b01110011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
logging.debug("--- Bit not set, skip exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.OVERBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b01110011101000000000000011111110, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:00000000", reg)
# 1000 HI Unsigned higher C and !Z
logging.debug("1000 HI Unsigned higher C and !Z")
logging.debug("--- Bit , exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.CARRYBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b10000011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
logging.debug("--- Bit , skip exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.ZEROBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b10000011101000000000000011111110, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:00000000", reg)
# 1001 LS Unsigned lower or same !C or Z
logging.debug("1001 LS Unsigned lower or same !C or Z")
logging.debug("--- Bit , exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.ZEROBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b10010011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
logging.debug("--- Bit , skip exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.CARRYBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b10010011101000000000000011111110, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:00000000", reg)
# 1010 GE Signed greater than or equal N == V
logging.debug("1010 GE Signed greater than or equal N == V")
logging.debug("--- Bit , exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.NEGATIVEBIT | ARMCPU.OVERBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b10100011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
logging.debug("--- Bit , exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b10100011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
logging.debug("--- Bit , skip exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.NEGATIVEBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b10100011101000000000000011111110, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:00000000", reg)
# 1011 LT Signed less than N != V
logging.debug("1011 LT Signed less than N != V")
logging.debug("--- Bit , exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.NEGATIVEBIT | ARMCPU.OVERBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b10100011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
logging.debug("--- Bit , exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b10100011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
logging.debug("--- Bit , skip exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.NEGATIVEBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b10100011101000000000000011111110, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:00000000", reg)
# 1100 GT Signed greater than !Z and (N == V)
logging.debug("1100 GT Signed greater than !Z and (N == V)")
logging.debug("--- Bit , exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = 0
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b11000011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
# 1101 LE Signed less than or equal Z or (N != V)
logging.debug("1101 LE Signed less than or equal Z or (N != V)")
logging.debug("--- Bit , exec")
globals.regs[0] = 0
globals.regs[globals.CPSR] = globals.regs[globals.CPSR] | ARMCPU.ZEROBIT
instrStr = armv6instrdecode.getInstructionFromCode(self, 0b11010011101000000000000011111111, 1)
logging.debug(instrStr)
reg = utils.buildRegValString(self, 0)
self.assertEqual(reg, "R00:000000FF", reg)
# 1110 AL Always (default) any
if __name__ == "__main__":
unittest.main()