/** GetValue
*
* Gets a value to place in a cell.
*/
wxString MemoryView::GetValue(int item, int column)
{
unsigned short addr = ViewToAddress(item);
short data = state.mem[addr];
wxString ret = wxEmptyString;
unsigned short pc = state.pc;
std::stringstream string;
std::bitset<16> b = data;
std::string instruction;
switch(column)
{
case MemoryAddress:
ret = wxString::Format(_("%04X:"), addr);
break;
case MemoryHexadecimal:
ret = wxString::Format(_("x%04X"), (unsigned short)data);
break;
case MemoryDecimal:
if (unsigned_mode)
ret = wxString::Format(_("%d"), (unsigned short)data);
else
ret = wxString::Format(_("%d"), (short)data);
break;
case MemoryLabel:
ret = wxString::FromUTF8(lc3_sym_rev_lookup(state, addr).c_str());
break;
case MemoryInstruction:
// Change the pc temporarily...
state.pc = (unsigned short) (addr + 1);
if (disassemble_level == 0)
instruction = lc3_basic_disassemble(state, data);
else if (disassemble_level == 1)
instruction = lc3_disassemble(state, data);
else
instruction = lc3_smart_disassemble(state, data);
ret = wxString::FromUTF8(instruction.c_str());
state.pc = pc;
break;
case MemoryBinary:
string << b;
ret = wxString::FromUTF8(string.str().c_str());
break;
case MemoryComment:
if (state.comments.find(addr) != state.comments.end())
{
ret = wxString::FromUTF8(state.comments[addr].c_str());
ret.Replace(_("\n"), _(" "), true);
}
break;
default:
ret = wxEmptyString;
}
return ret;
}
void lc3_run_test_case(lc3_test& test, const std::string& filename, int seed)
{
lc3_state state;
// Preliminary stuff
if (seed != -1) srand(seed);
lc3_init(state, test.randomize, test.randomize);
if (test.true_traps) lc3_set_true_traps(state, 1);
if (test.interrupt_enabled) state.interrupt_enabled = 1;
bool disable_plugins = test.disable_plugins;
state.max_stack_size = 0;
state.max_call_stack_size = -1;
state.in_lc3test = true;
try
{
LC3AssembleOptions options;
options.multiple_errors = false;
options.warnings_as_errors = false;
options.process_debug_comments = false;
options.enable_warnings = false;
options.disable_plugins = disable_plugins;
lc3_assemble(state, filename, options);
}
catch (LC3AssembleException e)
{
throw e.what();
}
std::stringstream* newinput = new std::stringstream();
// Set up test environment
for (unsigned int i = 0; i < test.input.size(); i++)
{
lc3_test_input& input = test.input[i];
int value_calc;
int address_calc = 0;
unsigned short effective_address;
///TODO flip the condition here so that if new types are added you don't have to check for it here...
if (input.type != TEST_IO && input.type != TEST_REGISTER && input.type != TEST_PC && input.type != TEST_SUBROUTINE &&
lc3_calculate(state, input.address, address_calc) == -1)
throw "An address expression " + input.address + " was not formed correctly.";
else if (input.type == TEST_REGISTER)
{
if (input.address.size() != 2)
throw "Register format is RX where x is between 0-7 found: " + input.address;
address_calc = input.address[1] - '0';
if (address_calc > 7 || address_calc < 0)
throw "Invalid register " + input.address;
}
else
lc3_calculate(state, input.address, address_calc);
effective_address = (unsigned short) address_calc;
switch (input.type)
{
case TEST_VALUE:
if (lc3_calculate(state, input.value, value_calc))
throw "<in test-value> A value expression " + input.value + " was malformed.";
state.mem[effective_address] = (short) value_calc;
break;
case TEST_REGISTER:
if (lc3_calculate(state, input.registerval, value_calc))
throw "<in test-register> A value expression " + input.registerval + " was malformed.";
state.regs[effective_address] = (short) value_calc;
break;
case TEST_PC:
if (lc3_calculate(state, input.pcval, value_calc))
throw "<in test-pc> A value expression " + input.pcval + " was malformed.";
state.pc = (unsigned short) value_calc;
break;
case TEST_POINTER:
if (lc3_calculate(state, input.pointer, value_calc))
throw "<in test-pointer> An expression was " + input.pointer + " malformed.";
state.mem[(unsigned short) state.mem[effective_address]] = (short) value_calc;
break;
case TEST_STRING:
for (unsigned int j = 0; j < input.text.size(); j++)
state.mem[state.mem[effective_address] + j] = input.text[j];
state.mem[(unsigned short) (state.mem[effective_address] + input.text.size())] = 0;
break;
case TEST_ARRAY:
for (unsigned int j = 0; j < input.array.size(); j++)
{
if (lc3_calculate(state, input.array[j], value_calc))
throw "<in test-array> An expression was " + input.array[j] + " malformed.";
state.mem[(unsigned short) (state.mem[effective_address] + j)] = (short) value_calc;
}
break;
case TEST_IO:
newinput->str(input.io);
break;
case TEST_SUBROUTINE:
break;
default:
throw "Unknown test type";
}
if (input.type == TEST_SUBROUTINE)
{
lc3_subr_input& subr = input.subroutine;
int pc;
int r7;
int r6;
int r5;
if (lc3_calculate(state, subr.name, pc) == -1)
throw "<in test-subr> invalid subroutine name given " + subr.name;
if (lc3_calculate(state, subr.stack, r6) == -1)
throw "<in test-subr> stack expression was malformed " + subr.stack;
if (lc3_calculate(state, subr.r7, r7) == -1)
throw "<in test-subr> r7 expression was malformed " + subr.r7;
if (lc3_calculate(state, subr.r5, r5) == -1)
throw "<in test-subr> r5 expression was malformed " + subr.r5;
state.pc = (unsigned short) pc;
state.regs[6] = (unsigned short)(r6 - subr.params.size());
state.regs[7] = (unsigned short) r7;
state.regs[5] = (unsigned short) r5;
state.mem[state.regs[7]] = 0xF025;
for (unsigned int j = 0; j < subr.params.size(); j++)
{
if (lc3_calculate(state, subr.params[j], value_calc))
throw "<in test-subr> param expression " + subr.params[j] + " was malformed.";
state.mem[(unsigned short)state.regs[6] + j] = (short) value_calc;
}
// This fixes the issue in which a subroutine is being tested, but it makes calls to other subroutines who takes a
// different number of parameters than the subroutine under test.
// If the file uses subroutine annotations then overwrite it.
for (const auto& info : subr.subroutines)
{
int address = 0;
if (lc3_calculate(state, info.name, address) == -1)
throw "<in test-subr> invalid subroutine name given " + info.name;
lc3_subroutine_info test_info = info;
test_info.address = (unsigned short) address;
state.subroutines[(unsigned short)address] = test_info;
}
}
}
state.input = newinput;
// Setup output capture device
std::stringstream* newoutput = new std::stringstream();
state.output = newoutput;
std::stringstream* newwarning = new std::stringstream();
state.warning = newwarning;
if (test.has_max_executions)
{
unsigned long i = 0;
// Do this num times or until halted.
while (i < test.max_executions && !state.halted)
{
//printf("%04x: %s (%x)\n", state.pc, lc3_disassemble(state, state.mem[state.pc]).c_str(), (unsigned short)state.mem[state.pc]);
/*printf("R0 %6d|x%04x\tR1 %6d|x%04x\tR2 %6d|x%04x\tR3 %6d|x%04x\nR4 %6d|x%04x\tR5 %6d|x%04x\tR6 %6d|x%04x\tR7 %6d|x%04x\nCC: %s\tPC: %04x\n\n",
state.regs[0], (unsigned short)state.regs[0], state.regs[1], (unsigned short)state.regs[1], state.regs[2], (unsigned short)state.regs[2],
state.regs[3], (unsigned short)state.regs[3], state.regs[4], (unsigned short)state.regs[4], state.regs[5], (unsigned short)state.regs[5],
state.regs[6], (unsigned short)state.regs[6], state.regs[7], (unsigned short)state.regs[7], (state.n ? "N" : (state.z ? "Z" : "P")),
(unsigned short) state.pc);*/
// Step one instruction
lc3_step(state);
// Increment instruction count
i++;
}
//lc3_run(state, test.max_executions);
}
else
lc3_run(state);
// Fill in the output values
test.has_halted = state.halted;
test.executions = state.executions;
test.warnings = state.warnings;
test.warning = newwarning->str();
bool test_passed = true;
unsigned int test_points = 0;
unsigned int test_max_points = 0;
// Check test environment
for (unsigned int i = 0; i < test.output.size(); i++)
{
std::stringstream expected;
std::stringstream actual;
lc3_test_output& output = test.output[i];
int value_calc;
short short_cmp;
int address_calc = 0;
unsigned short effective_address;
std::string str;
std::vector<short> arrayexpected;
std::vector<short> arrayactual;
if (output.type != TEST_IO && output.type != TEST_REGISTER && output.type != TEST_PC && lc3_calculate(state, output.address, address_calc) == -1)
throw "An address expression " + output.address + " was not formed correctly.";
else if (output.type == TEST_REGISTER)
{
address_calc = output.address[1] - '0';
if (address_calc > 7)
throw "Invalid register " + output.address;
}
effective_address = (unsigned short) address_calc;
output.passed = true;
output.earned = 0;
switch (output.type)
{
case TEST_VALUE:
if (lc3_calculate(state, output.value, value_calc))
throw "<in test-value> An expression " + output.value + " was malformed.";
short_cmp = (short) value_calc;
output.passed = lc3_test_check(output, &state.mem[effective_address], &short_cmp);
actual << state.mem[effective_address];
expected << short_cmp;
break;
case TEST_REGISTER:
if (lc3_calculate(state, output.registerval, value_calc))
throw "<in test-register> An expression " + output.registerval + " was malformed.";
short_cmp = (short) value_calc;
output.passed = lc3_test_check(output, &state.regs[effective_address], &short_cmp);
actual << state.regs[effective_address];
expected << short_cmp;
break;
case TEST_PC:
if (lc3_calculate(state, output.pcval, value_calc))
throw "<in test-pc> An expression " + output.pcval + " was malformed.";
short_cmp = (short) value_calc;
output.passed = lc3_test_check(output, &state.pc, &short_cmp);
actual << state.pc;
expected << short_cmp;
break;
case TEST_POINTER:
if (lc3_calculate(state, output.pointer, value_calc))
throw "<in test-pointer> An expression " + output.pointer + " was malformed.";
short_cmp = (short) value_calc;
output.passed = lc3_test_check(output, &state.mem[(unsigned short)state.mem[effective_address]], &short_cmp);
actual << state.mem[(unsigned short)state.mem[effective_address]];
expected << short_cmp;
break;
case TEST_STRING:
value_calc = (unsigned short)state.mem[effective_address];
short_cmp = state.mem[(unsigned short)value_calc];
while(short_cmp > 0 && short_cmp <= 255)
{
actual.put((char) short_cmp);
value_calc++;
short_cmp = state.mem[(unsigned short)value_calc];
}
str = actual.str();
output.passed = lc3_test_check(output, &str, &output.text);
expected << output.text;
break;
case TEST_ARRAY:
for (unsigned int j = 0; j < output.array.size(); j++)
{
if (lc3_calculate(state, output.array[j], value_calc))
throw "<in test-array> An expression " + output.array[j] + " was malformed.";
arrayexpected.push_back(state.mem[(unsigned short)(state.mem[effective_address] + j)]);
arrayactual.push_back((short)value_calc);
actual << state.mem[(unsigned short)(state.mem[effective_address] + j)] << " ";
expected << (short)value_calc << " ";
}
output.passed = lc3_test_check(output, &arrayactual, &arrayexpected);
break;
case TEST_IO:
str = newoutput->str();
output.passed = lc3_test_check(output, &str, &output.io);
actual << str;
expected << output.io;
break;
case TEST_SUBROUTINE:
break;
default:
throw "Unknown test type";
}
if (output.type != TEST_SUBROUTINE)
{
if (output.passed)
output.earned = output.points;
}
if (output.type == TEST_SUBROUTINE)
{
std::stringstream extra;
lc3_subr_output& subr = output.subroutine;
std::vector<short> expected_stack;
std::vector<short> actual_stack;
std::vector<short> locals;
std::vector<short> params;
for (int j = (int)subr.locals.size() - 1; j >= 0; j--)
{
if (lc3_calculate(state, subr.locals[j], value_calc))
throw "<in test-subr> A local variable expression " + subr.locals[i] + "was malformed.";
expected_stack.push_back((short)value_calc);
locals.push_back((short) value_calc);
}
int r7;
int r6;
int r5;
int answer;
if (lc3_calculate(state, subr.stack, r6) == -1)
throw "<in test-subr> stack expression " + subr.stack + " was malformed";
if (lc3_calculate(state, subr.r7, r7) == -1)
throw "<in test-subr> r7 expression " + subr.r7 + " was malformed";
if (lc3_calculate(state, subr.r5, r5) == -1)
throw "<in test-subr> r5 expression " + subr.r5 + " was malformed";
if (lc3_calculate(state, subr.answer, answer) == -1)
throw "<in test-subr> answer expression " + subr.answer + " was malformed";
expected_stack.push_back((short)r5);
expected_stack.push_back((short)r7);
expected_stack.push_back((short)answer);
for (unsigned int j = 0; j < subr.params.size(); j++)
{
if (lc3_calculate(state, subr.params[j], value_calc))
throw "<in test-subr> A param expression " + subr.params[j] + " was malformed.";
expected_stack.push_back((short)value_calc);
params.push_back((short) value_calc);
}
// Code to get the students stack frame
unsigned short actual_r6 = (unsigned short) r6;
if (state.first_level_calls.size() >= 1)
{
const auto& call_info = state.first_level_calls[0];
unsigned short subr_location = call_info.address;
if (state.subroutines.find(subr_location) == state.subroutines.end())
{
extra << " [WARNING] Could not determine number of parameters for subroutine " <<
lc3_sym_rev_lookup(state, subr_location) << " at address " <<
std::hex << "0x" << subr_location << "\n";
}
unsigned short start = call_info.r6 + call_info.params.size();
// Screams...
if (start >= actual_r6)
extra << " [WARNING] Could not get students stack frame.\n"
" Is the student managing the stack correctly?\n";
else
actual_stack.assign(state.mem + start, state.mem + actual_r6);
}
else if (state.first_level_calls.empty())
{
int num_params = subr.params.size();
// Get at least the parameters student could probably not save anything...
actual_stack.assign(state.mem + (actual_r6 - num_params), state.mem + actual_r6);
// Get additional addresses modified
unsigned short start = actual_r6 - num_params - 1;
while (state.memory_ops.find(start) != state.memory_ops.end())
{
if (!state.memory_ops[start].writes) break;
actual_stack.insert(actual_stack.begin(), state.mem[start]);
start--;
}
}
for (unsigned int j = 0; j < expected_stack.size(); j++)
expected << std::hex << "0x" << expected_stack[j] << " ";
expected << " r5: " << std::hex << "0x" << (short)r5 <<
" r6: " << std::hex << "0x" << (actual_r6 - subr.params.size() - 1) <<
" r7: " << std::hex << "0x" << (short)(r7 + 1);
for (unsigned int j = 0; j < actual_stack.size(); j++)
actual << std::hex << "0x" << actual_stack[j] << " ";
actual << " r5: " << std::hex << "0x" << state.regs[5] <<
" r6: " << std::hex << "0x" << state.regs[6] <<
" r7: " << std::hex << "0x" << state.regs[7];
// now that I have all information available time for some checks.
std::map<short, int> actual_stack_map;
for (unsigned int j = 0; j < actual_stack.size(); j++)
actual_stack_map[actual_stack[j]] += 1;
int points = 0;
// If they get something wrong then it will also be wrong in edit distance
// so cut some slack if you get a value wrong.
int ed_forgiveness = 0;
if (actual_stack_map[(short)answer] > 0)
{
actual_stack_map[(short)answer] -= 1;
points += subr.points_answer;
extra << CHECK << ANSWER_FOUND << " +" << subr.points_answer << ".\n";
}
else
{
ed_forgiveness++;
extra << MISS << ANSWER_FOUND << " -" << subr.points_answer << ".\n";
}
if (state.regs[6] == (short)(actual_r6 - subr.params.size() - 1))
{
points += subr.points_r6;
extra << CHECK << R6_FOUND << " +" << subr.points_r6 << ".\n";
}
else
{
extra << MISS << R6_FOUND << " -" << subr.points_r6 << ".\n";
}
if (actual_stack_map[(short)r7] > 0 && state.regs[7] == (short)(r7+1))
{
actual_stack_map[(short)r7] -= 1;
points += subr.points_r7;
extra << CHECK << R7_FOUND << " +" << subr.points_r7 << ".\n";
}
else
{
// Don't count if just r7 was clobbered
if (actual_stack_map[(short)r7] <= 0)
ed_forgiveness++;
extra << MISS << R7_FOUND << " -" << subr.points_r7 << ".\n";
}
if (actual_stack_map[(short)r5] > 0 && state.regs[5] == (short)r5)
{
actual_stack_map[(short)r5] -= 1;
points += subr.points_r5;
extra << CHECK << R5_FOUND << " +" << subr.points_r5 << ".\n";
}
else
{
if (actual_stack_map[(short)r5] <= 0)
ed_forgiveness++;
extra << MISS << R5_FOUND << " -" << subr.points_r5 << ".\n";
}
for (unsigned int j = 0; j < params.size(); j++)
{
if (actual_stack_map[params[j]] > 0)
{
actual_stack_map[params[j]] -= 1;
points += subr.points_params;
extra << CHECK << params[j] << " " << PARAM_FOUND << " +" << subr.points_params << ".\n";
}
else
{
ed_forgiveness++;
extra << MISS << params[j] << " " << PARAM_FOUND << " -" << subr.points_params << ".\n";
}
}
bool all_locals_wrong = true;
for (unsigned int j = 0; j < locals.size(); j++)
{
if (actual_stack_map[locals[j]] > 0)
{
actual_stack_map[locals[j]] -= 1;
points += subr.points_locals;
all_locals_wrong = false;
extra << CHECK << locals[j] << " " << LOCAL_FOUND << " +" << subr.points_locals << ".\n";
}
else
{
ed_forgiveness++;
extra << MISS << locals[j] << " " << LOCAL_FOUND << " -" << subr.points_locals << ".\n";
}
}
// Subroutine calls check.
std::set<lc3_subroutine_call_info, lc3_subroutine_call_info_cmp> actual_calls(state.first_level_calls.begin(), state.first_level_calls.end());
std::set<lc3_subroutine_call_info, lc3_subroutine_call_info_cmp> expected_calls;
for (const auto& expected_call : subr.calls)
{
lc3_subroutine_call_info info;
int addr = lc3_sym_lookup(state, expected_call.name);
if (addr == -1)
throw "Invalid subroutine name given in <call> " + expected_call.name;
for (unsigned int i = 0; i < expected_call.params.size(); i++)
{
int param;
if (lc3_calculate(state, expected_call.params[i], param) == -1)
throw "<in test-subr/call> param expression " + expected_call.params[i] + " was malformed";
info.params.push_back(param);
}
info.address = addr;
info.r6 = 0;
expected_calls.insert(info);
}
for (const auto& call : expected_calls)
{
std::stringstream call_name;
call_name << lc3_sym_rev_lookup(state, call.address) << "(";
if (state.subroutines.find(call.address) == state.subroutines.end())
call_name << "?";
for (unsigned int i = 0; i < call.params.size(); i++)
{
call_name << std::hex << "0x" << call.params[i];
if (i != call.params.size() - 1)
call_name << ",";
}
call_name << ")";
if (actual_calls.find(call) != actual_calls.end())
{
extra << CHECK << "Call " << call_name.str() << " made correctly.\n";
points += subr.points_calls;
}
else
{
extra << MISS << "Call " << call_name.str() << " was not made.\n";
}
}
for (const auto& call : actual_calls)
{
std::stringstream call_name;
std::string name = lc3_sym_rev_lookup(state, call.address);
if (name.empty())
call_name << "0x" << std::hex << call.address << "(";
else
call_name << name << "(";
if (state.subroutines.find(call.address) == state.subroutines.end())
call_name << "?";
for (unsigned int i = 0; i < call.params.size(); i++)
{
call_name << std::hex << "0x" << call.params[i];
if (i != call.params.size() - 1)
call_name << ",";
}
call_name << ")";
if (expected_calls.find(call) == expected_calls.end())
{
extra << MISS << "Unexpected Call " << call_name.str() << " made.\n";
}
}
// Read answer check sigh...
if (subr.points_read_answer > 0)
{
for (const auto& call : actual_calls)
{
if (expected_calls.find(call) != expected_calls.end() && !call.params.empty())
{
if (state.memory_ops[call.r6 - 1].reads > 0)
{
extra << CHECK << "Read answer from stack.\n";
points += subr.points_read_answer;
}
else
extra << MISS << "Did not read answer from stack.\n";
}
}
}
// If all local variables are wrong then it can be argued that they was saving registers
// And forgot to save locals...
if (all_locals_wrong)
{
// Bro do you even calling convention
if (actual_stack.size() > subr.params.size() + 3)
// Truncate stack to last num_params + 3 elements the stuff we care about (don't do expected since ed forgiveness handles it).
actual_stack.erase(actual_stack.begin(), actual_stack.begin() + (actual_stack.size() - subr.params.size() - 3));
if (!subr.locals.empty())
extra << " All locals were not found, so locals aren't included in structure check.\n";
}
else
{
if (actual_stack.size() > expected_stack.size())
expected_stack.insert(expected_stack.begin(), actual_stack.begin(), actual_stack.begin() + (actual_stack.size() - expected_stack.size()));
}
int ed_grade = edit_distance(actual_stack, expected_stack);
points -= (ed_grade - ed_forgiveness) * subr.deductions_edist;
int mistakes = ed_grade - ed_forgiveness;
if (mistakes == 0)
extra << " Found no structural mistakes in the stack. No changes needed.\n";
else
extra << " Found " << mistakes << " structural mistakes in stack -" << subr.deductions_edist * mistakes << ".\n";
output.passed = (ed_grade == 0) && (ed_forgiveness == 0);
output.extra_output += extra.str();
output.earned = points;
}
test_passed = test_passed && output.passed;
test_points += output.earned;
test_max_points += output.points;
output.expected = expected.str();
output.actual = actual.str();
}
// Tear down
delete state.input;
delete state.output;
delete state.warning;
test.passed = test_passed;
test.points = test_points;
test.max_points = test_max_points;
}
/** SetValue
*
* Sets a value at a cell
*/
void MemoryView::SetValue(int item, int col, const wxString &value)
{
unsigned short addr = ViewToAddress(item);
int data = 0;
wxString effvalue = value;
std::string strdata;
std::string newsym;
char *errstr;
switch(col)
{
case MemoryHexadecimal:
if (value.StartsWith(_("x")) || value.StartsWith(_("X")))
effvalue = _("0") + value;
else if (!(value.StartsWith(_("0x")) && value.StartsWith(_("0X"))))
effvalue = _("0x") + value;
strdata = effvalue.ToStdString();
data = (int)strtol(strdata.c_str(), &errstr, 16);
if (*errstr) return;
lc3_mem_write(state, addr, (short)data, true);
break;
case MemoryDecimal:
if (value.StartsWith(_("#")))
effvalue = value.Mid(1);
strdata = effvalue.ToStdString();
data = (int)strtol(strdata.c_str(), &errstr, 10);
if (*errstr) return;
lc3_mem_write(state, addr, (short)data, true);
break;
case MemoryLabel:
strdata = lc3_sym_rev_lookup(state, addr);
newsym = value.ToStdString();
if (!strdata.empty()) lc3_sym_delete(state, strdata);
data = lc3_sym_lookup(state, newsym);
if (data == -1)
lc3_sym_add(state, newsym, addr);
else
wxMessageBox(wxString::Format("ERROR! The symbol %s already exists at address 0x%04x",
newsym, data), _("ERROR"));
break;
case MemoryBinary:
if (value.StartsWith(_("0b")))
effvalue = value.Mid(2);
strdata = effvalue.ToStdString();
data = (int)strtol(strdata.c_str(), &errstr, 2);
if (*errstr) return;
lc3_mem_write(state, addr, (short)data, true);
break;
case MemoryInstruction:
try
{
strdata = effvalue.ToStdString();
if (!strdata.empty())
lc3_mem_write(state, addr, (short)lc3_assemble_one(state, addr, strdata), true);
else
lc3_mem_write(state, addr, 0, true);
}
catch (LC3AssembleException e)
{
effvalue = e.what();
wxMessageBox(wxString::Format("ERROR! %s", effvalue), _("Assemble Error"));
}
catch (std::vector<LC3AssembleException> e)
{
effvalue = e[0].what();
wxMessageBox(wxString::Format("ERROR! %s", effvalue), _("Assemble Error"));
}
break;
default:
break;
}
}