50 lines
1.2 KiB
Rust
50 lines
1.2 KiB
Rust
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use crate::{CacheStatus, ChannelFatalError, SideChannelError, SingleAddrCacheSideChannel};
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use cache_utils::calibration::only_reload;
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use cache_utils::flush;
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#[derive(Debug)]
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pub struct NaiveFlushAndReload {
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pub threshold: u64,
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current: Option<*const u8>,
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}
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impl NaiveFlushAndReload {
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pub fn from_threshold(threshold: u64) -> Self {
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NaiveFlushAndReload {
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threshold,
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current: None,
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}
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}
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}
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impl SingleAddrCacheSideChannel for NaiveFlushAndReload {
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fn test_single(&mut self, addr: *const u8) -> Result<CacheStatus, SideChannelError> {
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if self.current != Some(addr) {
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panic!(); // FIXME
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}
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let t = unsafe { only_reload(addr) };
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if t > self.threshold {
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Ok(CacheStatus::Miss)
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} else {
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Ok(CacheStatus::Hit)
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}
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}
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fn prepare_single(&mut self, addr: *const u8) -> Result<(), SideChannelError> {
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unsafe { flush(addr) };
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self.current = Some(addr);
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Ok(())
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}
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fn victim_single(&mut self, operation: &dyn Fn()) {
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operation()
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}
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fn calibrate_single(
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&mut self,
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_addresses: impl IntoIterator<Item = *const u8>,
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) -> Result<(), ChannelFatalError> {
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Ok(())
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}
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}
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