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EXCEPTION SYSTEM (initial version - may change later)

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This commit is contained in:
taitep
2025-12-24 13:56:41 +01:00
parent 3f789442c0
commit 09d9064372
11 changed files with 338 additions and 332 deletions
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55
src/main.rs
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@@ -9,7 +9,8 @@ use std::{env, sync::Arc, time::Duration};
use trve::{
consts::{Byte, DWord, HWord, Word},
core::Core,
mem::{DeviceEntry, MemAccessFault, MemConfig, MemDeviceInterface, PageNum, Ram},
exceptions::ExceptionType,
mem::{DeviceEntry, MemConfig, MemDeviceInterface, PageNum, Ram},
};
use anyhow::{Result, bail};
@@ -63,12 +64,7 @@ mod basic_uart;
struct DbgOut;
impl MemDeviceInterface for DbgOut {
fn write_dword(
&self,
page: PageNum,
offset: u16,
value: DWord,
) -> Result<(), trve::mem::MemAccessFault> {
fn write_dword(&self, page: PageNum, offset: u16, value: DWord) -> Result<(), ExceptionType> {
eprintln!(
"Wrote DWord {value:016x} to Debug-Out page {page}, offset {offset} (byte {})",
offset * 8
@@ -76,12 +72,7 @@ impl MemDeviceInterface for DbgOut {
Ok(())
}
fn write_word(
&self,
page: PageNum,
offset: u16,
value: Word,
) -> Result<(), trve::mem::MemAccessFault> {
fn write_word(&self, page: PageNum, offset: u16, value: Word) -> Result<(), ExceptionType> {
eprintln!(
"Wrote Word {value:08x} to Debug-Out page {page}, offset {offset} (byte {})",
offset * 4
@@ -89,12 +80,7 @@ impl MemDeviceInterface for DbgOut {
Ok(())
}
fn write_hword(
&self,
page: PageNum,
offset: u16,
value: HWord,
) -> Result<(), trve::mem::MemAccessFault> {
fn write_hword(&self, page: PageNum, offset: u16, value: HWord) -> Result<(), ExceptionType> {
eprintln!(
"Wrote HWord {value:04x} to Debug-Out page {page}, offset {offset} (byte {})",
offset * 2
@@ -102,45 +88,40 @@ impl MemDeviceInterface for DbgOut {
Ok(())
}
fn write_byte(
&self,
page: PageNum,
offset: u16,
value: Byte,
) -> Result<(), trve::mem::MemAccessFault> {
fn write_byte(&self, page: PageNum, offset: u16, value: Byte) -> Result<(), ExceptionType> {
eprintln!("Wrote Byte {value:02x} to Debug-Out page {page}, offset {offset}");
Ok(())
}
fn read_dword(&self, _page: PageNum, _offset: u16) -> Result<DWord, trve::mem::MemAccessFault> {
Err(MemAccessFault)
fn read_dword(&self, _page: PageNum, _offset: u16) -> Result<DWord, ExceptionType> {
Err(ExceptionType::LoadAccessFault)
}
fn read_word(&self, _page: PageNum, _offset: u16) -> Result<Word, trve::mem::MemAccessFault> {
Err(MemAccessFault)
fn read_word(&self, _page: PageNum, _offset: u16) -> Result<Word, ExceptionType> {
Err(ExceptionType::LoadAccessFault)
}
fn read_hword(&self, _page: PageNum, _offset: u16) -> Result<HWord, trve::mem::MemAccessFault> {
Err(MemAccessFault)
fn read_hword(&self, _page: PageNum, _offset: u16) -> Result<HWord, ExceptionType> {
Err(ExceptionType::LoadAccessFault)
}
fn read_byte(&self, _page: PageNum, _offset: u16) -> Result<Byte, trve::mem::MemAccessFault> {
Err(MemAccessFault)
fn read_byte(&self, _page: PageNum, _offset: u16) -> Result<Byte, ExceptionType> {
Err(ExceptionType::LoadAccessFault)
}
fn get_atomic_word(
&self,
_page: PageNum,
_offset: u16,
) -> Result<&std::sync::atomic::AtomicU32, trve::mem::MemAccessFault> {
Err(MemAccessFault)
) -> Result<&std::sync::atomic::AtomicU32, ExceptionType> {
Err(ExceptionType::StoreAmoAccessFault)
}
fn get_atomic_dword(
&self,
_page: PageNum,
_offset: u16,
) -> Result<&std::sync::atomic::AtomicU64, trve::mem::MemAccessFault> {
Err(MemAccessFault)
) -> Result<&std::sync::atomic::AtomicU64, ExceptionType> {
Err(ExceptionType::StoreAmoAccessFault)
}
}