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88 lines
1.9 KiB
88 lines
1.9 KiB
use thiserror::Error;
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use crate::asm::data::literal::{DebugMsg, Label, RoutineName, Value};
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use crate::asm::data::Register;
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use std::borrow::Cow;
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#[derive(Error, Debug)]
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pub enum Fault {
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#[error("Bad instruction at addr {addr:#10x}: {cause}")]
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BadInstruction {
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addr: u32,
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cause: InstrError,
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},
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#[error("Runtime hit a barrier instruction: {msg}")]
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Barrier {
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msg: DebugMsg,
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},
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#[error("User fault: {msg}")]
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FaultInstr {
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msg: DebugMsg,
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},
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#[error("Program ended.")]
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Halt,
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#[error("Operation not allowed: {0}")]
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NotAllowed(Cow<'static, str>),
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#[error("Object does not exist: {0:#x}")]
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ObjectNotExist(Value),
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// #[error("Memory region {area:?} is locked by thread {owner:?}")]
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// MemoryLocked {
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// area: MemorySpan,
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// owner: ThreadToken
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// },
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//
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// #[error("Memory claim {claim:?} owned by thread {owner:?} does not exist")]
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// ClaimNotExist {
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// claim: ClaimId,
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// owner: ThreadToken
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// },
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#[error("Register does not exist: {reg:?}")]
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RegisterNotExist {
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reg: Register,
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},
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#[error("Register is read-only: {reg:?}")]
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RegisterNotWritable {
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reg: Register,
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},
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#[error("Called undefined routine: {routine}")]
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NoSuchRoutine {
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routine: RoutineName,
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},
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#[error("Jump to undefined far label: {label}")]
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NoSuchLabel {
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label: Label,
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},
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#[error("Crossed a barrier: {msg}")]
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JumpThroughBarrier {
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msg: DebugMsg,
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},
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#[error("Call stack underflow")]
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CallStackUnderflow,
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#[error("Attempt to read undefined extension data store")]
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ExtDataNotDefined,
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}
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#[derive(Error, Debug)]
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pub enum InstrError {
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#[error("Instruction not recognized")]
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UnknownInstruction,
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#[error("Invalid bit span")]
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BadBitSpan,
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#[error("Operands data size differs")]
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UnevenOperandSize,
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}
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