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use core::ops::Deref;
use crate::{
unwinder::UnwinderInternal, AllocationPolicy, Error, FrameAddress, MayAllocateDuringUnwind,
Module, Unwinder,
};
use super::{ArchAarch64, CacheAarch64, UnwindRegsAarch64};
/// The unwinder for the Aarch64 CPU architecture. Use the [`Unwinder`] trait for unwinding.
///
/// Type arguments:
///
/// - `D`: The type for unwind section data in the modules. See [`Module`].
/// - `P`: The [`AllocationPolicy`].
pub struct UnwinderAarch64<D, P = MayAllocateDuringUnwind>(UnwinderInternal<D, ArchAarch64, P>);
impl<D, P> Default for UnwinderAarch64<D, P> {
fn default() -> Self {
Self::new()
}
}
impl<D, P> Clone for UnwinderAarch64<D, P> {
fn clone(&self) -> Self {
Self(self.0.clone())
}
}
impl<D, P> UnwinderAarch64<D, P> {
/// Create an unwinder for a process.
pub fn new() -> Self {
Self(UnwinderInternal::new())
}
}
impl<D: Deref<Target = [u8]>, P: AllocationPolicy> Unwinder for UnwinderAarch64<D, P> {
type UnwindRegs = UnwindRegsAarch64;
type Cache = CacheAarch64<P>;
type Module = Module<D>;
fn add_module(&mut self, module: Module<D>) {
self.0.add_module(module);
}
fn remove_module(&mut self, module_address_range_start: u64) {
self.0.remove_module(module_address_range_start);
}
fn max_known_code_address(&self) -> u64 {
self.0.max_known_code_address()
}
fn unwind_frame<F>(
&self,
address: FrameAddress,
regs: &mut UnwindRegsAarch64,
cache: &mut CacheAarch64<P>,
read_stack: &mut F,
) -> Result<Option<u64>, Error>
where
F: FnMut(u64) -> Result<u64, ()>,
{
self.0.unwind_frame(address, regs, &mut cache.0, read_stack)
}
}