Struct gimli::read::cfi::EhHdrTable

pub struct EhHdrTable<'a, R: Reader> {
    hdr: &'a ParsedEhFrameHdr<R>,
}

The CFI binary search table that is an optional part of the .eh_frame_hdr section.

Fields

hdr: &'a ParsedEhFrameHdr<R>

Implementations

impl<'a, R: Reader + 'a> EhHdrTable<'a, R>

pub fn iter<'bases>( &self, bases: &'bases BaseAddresses, ) -> EhHdrTableIter<'_, 'bases, R>

Return an iterator that can walk the .eh_frame_hdr table.

Each table entry consists of a tuple containing an initial_location and address. The initial location represents the first address that the targeted FDE is able to decode. The address is the address of the FDE in the .eh_frame section. The address can be converted with EhHdrTable::pointer_to_offset and EhFrame::fde_from_offset to an FDE.

pub fn lookup(&self, address: u64, bases: &BaseAddresses) -> Result<Pointer>

Probably returns a pointer to the FDE for the given address.

This performs a binary search, so if there is no FDE for the given address, this function will return a pointer to any other FDE that’s close by.

To be sure, you must call contains on the FDE.

pub fn pointer_to_offset( &self, ptr: Pointer, ) -> Result<EhFrameOffset<R::Offset>>

Convert a Pointer to a section offset.

This does not support indirect pointers.

pub fn fde_for_address<F>( &self, frame: &EhFrame<R>, bases: &BaseAddresses, address: u64, get_cie: F, ) -> Result<FrameDescriptionEntry<R>>

where F: FnMut(&EhFrame<R>, &BaseAddresses, EhFrameOffset<R::Offset>) -> Result<CommonInformationEntry<R>>,

Returns a parsed FDE for the given address, or NoUnwindInfoForAddress if there are none.

You must provide a function to get its associated CIE. See PartialFrameDescriptionEntry::parse for more information.

Example

let table = eh_frame_hdr.table().unwrap();
let fde = table.fde_for_address(&eh_frame, &bases, addr, EhFrame::cie_from_offset)?;

pub fn unwind_info_for_address<'ctx, F, S>( &self, frame: &EhFrame<R>, bases: &BaseAddresses, ctx: &'ctx mut UnwindContext<R::Offset, S>, address: u64, get_cie: F, ) -> Result<&'ctx UnwindTableRow<R::Offset, S>>

where F: FnMut(&EhFrame<R>, &BaseAddresses, EhFrameOffset<R::Offset>) -> Result<CommonInformationEntry<R>>, S: UnwindContextStorage<R::Offset>,

Returns the frame unwind information for the given address, or NoUnwindInfoForAddress if there are none.

You must provide a function to get the associated CIE. See PartialFrameDescriptionEntry::parse for more information.

Trait Implementations

impl<'a, R: Clone + Reader> Clone for EhHdrTable<'a, R>

fn clone(&self) -> EhHdrTable<'a, R>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a, R: Debug + Reader> Debug for EhHdrTable<'a, R>

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

Formats the value using the given formatter.