[−][src]Trait gimli::read::UnwindSection

use gimli::{BaseAddresses, EhFrame, EndianSlice, NativeEndian, UninitializedUnwindContext,
            UnwindSection};

// Get the `.eh_frame` section from the object file. Alternatively,
// use `EhFrame` with the `.eh_frame` section of the object file.
let eh_frame = EhFrame::new(read_eh_frame_section(), NativeEndian);

// Get the address of the PC for a frame you'd like to unwind.
let address = get_frame_pc();

// This context is reusable, which cuts down on heap allocations.
let ctx = UninitializedUnwindContext::new();

// Optionally provide base addresses for any relative pointers. If a
// base address isn't provided and a pointer is found that is relative to
// it, we will return an `Err`.
let bases = BaseAddresses::default()
    .set_text(address_of_text_section_in_memory)
    .set_got(address_of_got_section_in_memory);

let (unwind_info, ctx) = eh_frame.unwind_info_for_address(&bases, ctx, address)
    .map_err(|(err, ctx)| {
        // Recover the uninitialized `ctx` to reuse it in future unwinding.
        recover(ctx);
        err
    })?;

do_stuff_with(unwind_info);