Enum lc3_ensemble::sim::SimErr

pub enum SimErr {
    IllegalOpcode,
    InvalidInstrFormat,
    PrivilegeViolation,
    AccessViolation,
    ProgramHalted,
    StrictRegSetUninit,
    StrictMemSetUninit,
    StrictIOSetUninit,
    StrictJmpAddrUninit,
    StrictMemAddrUninit,
    StrictPCCurrUninit,
    StrictPCNextUninit,
    StrictPSRSetUninit,
}

Errors that can occur during simulation.

Variants

IllegalOpcode

Word was decoded, but the opcode was invalid.

InvalidInstrFormat

Word was decoded, and the opcode is recognized, but the instruction’s format is invalid.

PrivilegeViolation

A privileged instruction was called in user mode.

AccessViolation

A supervisor region was accessed in user mode.

ProgramHalted

Not an error, but HALT!

StrictRegSetUninit

A register was loaded with a partially uninitialized value.

This will ignore loads from the stack (R6), because it is convention to push registers (including uninitialized registers). This also ignores loads from allocated (.blkw) memory in case the program writer uses those as register stores.

StrictMemSetUninit

Memory was loaded with a partially uninitialized value.

This will ignore loads from the stack (R6), because it is convention to push registers (including uninitialized registers). This also ignores loads from allocated (.blkw) memory in case the program writer uses those as register stores.

StrictIOSetUninit

Data was stored into MMIO with a partially uninitialized value.

StrictJmpAddrUninit

Address to jump to is coming from an uninitialized value.

StrictMemAddrUninit

Address to read from memory is coming from an uninitialized value.

StrictPCCurrUninit

PC is pointing to an uninitialized value.

StrictPCNextUninit

PC was set to an address that has an uninitialized value and will read from it next cycle.

StrictPSRSetUninit

The PSR was loaded with a partially uninitialized value (by RTI).

Trait Implementations

impl Debug for SimErr

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for SimErr

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for SimErr

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type based access to context intended for error reports.