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Added tracing mode to debugger

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This commit is contained in:
transistor 2021-11-04 13:32:51 -07:00
parent 2cb21d7b8d
commit 8ba506cc11
3 changed files with 22 additions and 15 deletions
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22
src/cpus/m68k/execute.rs
View File

@ -130,7 +130,7 @@ impl M68k {
}
pub fn exception(&mut self, system: &System, number: u8, is_interrupt: bool) -> Result<(), Error> {
info!("{}: raising exception {}", DEV_NAME, number);
debug!("{}: raising exception {}", DEV_NAME, number);
let offset = (number as u16) << 2;
if self.cputype >= M68kType::MC68010 {
self.push_word(system, offset)?;
@ -231,28 +231,28 @@ impl M68k {
self.state.pc = (self.decoder.start + 2).wrapping_add(offset as u32);
},
Instruction::BCHG(bitnum, target, size) => {
let bitnum = self.get_target_value(system, bitnum, Size::Byte)? % get_bit_op_max(size);
let bitnum = self.get_target_value(system, bitnum, Size::Byte)?;
let mut value = self.get_target_value(system, target, size)?;
let mask = self.set_bit_test_flags(value, bitnum, size);
value = (value & !mask) | (!(value & mask) & mask);
self.set_target_value(system, target, value, size)?;
},
Instruction::BCLR(bitnum, target, size) => {
let bitnum = self.get_target_value(system, bitnum, Size::Byte)? % get_bit_op_max(size);
let bitnum = self.get_target_value(system, bitnum, Size::Byte)?;
let mut value = self.get_target_value(system, target, size)?;
let mask = self.set_bit_test_flags(value, bitnum, size);
value = value & !mask;
self.set_target_value(system, target, value, size)?;
},
Instruction::BSET(bitnum, target, size) => {
let bitnum = self.get_target_value(system, bitnum, Size::Byte)? % get_bit_op_max(size);
let bitnum = self.get_target_value(system, bitnum, Size::Byte)?;
let mut value = self.get_target_value(system, target, size)?;
let mask = self.set_bit_test_flags(value, bitnum, size);
value = value | mask;
self.set_target_value(system, target, value, size)?;
},
Instruction::BTST(bitnum, target, size) => {
let bitnum = self.get_target_value(system, bitnum, Size::Byte)? % get_bit_op_max(size);
let bitnum = self.get_target_value(system, bitnum, Size::Byte)?;
let value = self.get_target_value(system, target, size)?;
self.set_bit_test_flags(value, bitnum, size);
},
@ -415,7 +415,7 @@ impl M68k {
self.set_target_value(system, target2, value1, Size::Long)?;
},
Instruction::EXT(reg, from_size, to_size) => {
let input = self.state.d_reg[reg as usize];
let input = get_value_sized(self.state.d_reg[reg as usize], from_size);
let result = match (from_size, to_size) {
(Size::Byte, Size::Word) => ((((input as u8) as i8) as i16) as u16) as u32,
(Size::Word, Size::Long) => (((input as u16) as i16) as i32) as u32,
@ -503,7 +503,7 @@ impl M68k {
Instruction::MOVEM(target, size, dir, mask) => {
self.execute_movem(system, target, size, dir, mask)?;
},
//Instruction::MOVEP(Register, Target, Size, Direction) => {
//Instruction::MOVEP(reg, target, size, dir) => {
//},
Instruction::MOVEQ(data, reg) => {
let value = sign_extend_to_long(data as u32, Size::Byte) as u32;
@ -1170,14 +1170,6 @@ fn get_msb_mask(value: u32, size: Size) -> u32 {
}
}
fn get_bit_op_max(size: Size) -> u32 {
match size {
Size::Byte => 8,
Size::Long => 32,
Size::Word => panic!("bit ops cannot be word size"),
}
}
fn get_bit_field_mask(offset: u32, width: u32) -> u32 {
let mut mask = 0;
for _ in 0..width {

14
src/debugger.rs
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@ -31,6 +31,7 @@ impl StackTracer {
pub struct Debugger {
pub last_command: Option<String>,
pub repeat: u32,
pub trace_only: bool,
}
@ -39,14 +40,23 @@ impl Debugger {
Self {
last_command: None,
repeat: 0,
trace_only: false,
}
}
pub fn breakpoint_occurred(&mut self) {
self.trace_only = false;
}
pub fn run_debugger(&mut self, system: &System, target: TransmutableBox) -> Result<(), Error> {
let mut target = target.borrow_mut();
let debug_obj = target.as_debuggable().unwrap();
debug_obj.print_current_step(system)?;
if self.trace_only {
return Ok(());
}
if self.repeat > 0 {
self.repeat -= 1;
let last_command = self.last_command.clone().unwrap();
@ -116,6 +126,10 @@ impl Debugger {
self.check_repeat_arg(args)?;
return Ok(true);
},
"t" | "trace" => {
self.trace_only = true;
return Ok(true);
}
//"ds" | "stack" | "dumpstack" => {
// println!("Stack:");
// for addr in &self.debugger.stack_tracer.calls {

1
src/system.rs
View File

@ -62,6 +62,7 @@ impl System {
pub fn enable_debugging(&self) {
self.debug_enabled.set(true);
self.debugger.borrow_mut().breakpoint_occurred();
}
pub fn disable_debugging(&self) {