/** lc3_remove_break
*
* Removes the breakpoint from the list of breakpoints.
* @param lc3_state lc3_state
* @param symbol symbol to remove breakpoint from
*/
bool lc3_remove_break(lc3_state& state, const std::string& symbol)
{
int addr = lc3_sym_lookup(state, symbol);
if (addr == -1) return true;
return lc3_remove_break(state, addr);
}
void do_delete(const std::string& symbol)
{
lc3_remove_blackbox(state, symbol);
lc3_remove_break(state, symbol);
lc3_remove_watch(state, symbol);
memory->Update();
}
void do_delete(unsigned short address)
{
lc3_remove_blackbox(state, address);
lc3_remove_break(state, address);
lc3_remove_watch(state, false, address);
memory->Update();
}
/** SetTemppoint
*
* Sets a temporary breakpoint
*/
void MemoryGrid::OnTemppoint(wxCommandEvent& event)
{
int addr = -1;
addr = GetSelectedRow();
if (addr == -1) return;
bool exist = lc3_add_break(state, (unsigned short) addr, "", "1", 1);
if (exist) lc3_remove_break(state, (unsigned short) addr);
Refresh(addr);
}
/** lc3_break_test
*
* Tests if we have hit a breakpoint or a watchpoint.
*/
bool lc3_break_test(lc3_state& state, const lc3_state_change* changes)
{
// Test for breakpoints
if (state.breakpoints.find(state.pc) != state.breakpoints.end())
{
lc3_breakpoint_info& info = state.breakpoints[state.pc];
if (info.enabled)
{
int boolean = 0;
if (lc3_calculate(state, info.condition, boolean))
{
// Expression has an error...
// TODO Restrict condition to 128 chars
char buf[256];
sprintf(buf, "Breakpoint: %s Error in Expression: %s", info.label.c_str(), info.condition.c_str());
lc3_warning(state, buf);
}
else if (boolean)
{
// Halt
state.halted = 1;
info.hit_count++;
// If we are concerned about the number of times and we have surpassed the max.
if (info.max_hits >= 0 && info.hit_count >= info.max_hits)
// Time to delete
lc3_remove_break(state, state.pc);
}
}
}
// Test for watchpoints
bool r7changed = state.regs[7] != changes->r7;
// Have we modified a register or a memory address?
if (changes->changes == LC3_REGISTER_CHANGE)
{
int reg = changes->location;
if (state.reg_watchpoints.find(reg) != state.reg_watchpoints.end())
{
lc3_watchpoint_info& info = state.reg_watchpoints[reg];
if (info.enabled)
{
int boolean = 0;
if (lc3_calculate(state, info.condition, boolean))
{
// Expression has an error...
// TODO Restrict condition to 128 chars and label to 32 chars
char buf[256];
sprintf(buf, "Watchpoint: %s Error in Expression: %s", info.label.c_str(), info.condition.c_str());
lc3_warning(state, buf);
}
else if (boolean)
{
// Halt
state.halted = 1;
info.hit_count++;
// If we are concerned about the number of times and we have surpassed the max.
if (info.max_hits >= 0 && info.hit_count >= info.max_hits)
// Time to delete
lc3_remove_watch(state, true, reg);
}
}
}
}
else if (changes->changes == LC3_MEMORY_CHANGE)
{
int mem = changes->location;
if (state.mem_watchpoints.find(mem) != state.mem_watchpoints.end())
{
lc3_watchpoint_info& info = state.mem_watchpoints[mem];
if (info.enabled)
{
int boolean = 0;
if (lc3_calculate(state, info.condition, boolean))
{
// Expression has an error...
// TODO Restrict condition to 128 chars and label to 32 chars
char buf[256];
sprintf(buf, "Watchpoint: %s Error in Expression: %s", info.label.c_str(), info.condition.c_str());
lc3_warning(state, buf);
}
else if (boolean)
{
// Halt
state.halted = 1;
info.hit_count++;
// If we are concerned about the number of times and we have surpassed the max.
if (info.max_hits >= 0 && info.hit_count >= info.max_hits)
// Time to delete
lc3_remove_watch(state, false, mem);
}
}
}
}
// Also handle r7 changes.
if (r7changed)
{
int reg = 7;
if (state.reg_watchpoints.find(reg) != state.reg_watchpoints.end())
{
lc3_watchpoint_info& info = state.reg_watchpoints[reg];
if (info.enabled)
{
int boolean = 0;
if (lc3_calculate(state, info.condition, boolean))
{
// Expression has an error...
// TODO Restrict condition to 128 chars and label to 32 chars
char buf[256];
sprintf(buf, "Watchpoint: %s Error in Expression: %s", info.label.c_str(), info.condition.c_str());
lc3_warning(state, buf);
}
else if (boolean)
{
// Halt
state.halted = 1;
info.hit_count++;
// If we are concerned about the number of times and we have surpassed the max.
if (info.max_hits >= 0 && info.hit_count >= info.max_hits)
// Time to delete
lc3_remove_watch(state, true, reg);
}
}
}
}
return state.halted;
}
