cfi

src/dwarf.rs

@@ -1,57 +0,0 @@
-use core::ffi;
-use std::{ffi::CStr, fmt::Debug};
-
-use gimli::UnwindTable;
-
-#[allow(non_camel_case_types)]
-#[repr(C)]
-struct dl_find_object {
-    dlfo_flags: ffi::c_ulonglong,
-    dlfo_map_start: *const ffi::c_void,
-    dlfo_map_end: *const ffi::c_void,
-    dlf_link_map: *const ffi::c_void,
-    dlfo_eh_frame: *const ffi::c_void,
-}
-
-extern "C" {
-    fn _dl_find_object(address: *const ffi::c_void, result: *mut dl_find_object) -> ffi::c_int;
-}
-
-#[derive(Debug)]
-pub struct DwarfInfo {
-    /// The text segment
-    map: *const [u8],
-    /// PT_GNU_EH_FRAME
-    dwarf: *const u8,
-}
-
-pub fn dwarf_info(addr: *const ffi::c_void) -> Option<DwarfInfo> {
-    unsafe {
-        let mut out = core::mem::zeroed();
-        let ret = _dl_find_object(addr, &mut out);
-        trace!("dl_find_object returned {ret}");
-        if ret != 0 {
-            return None;
-        }
-        if out.dlfo_eh_frame.is_null() {
-            return None;
-        }
-
-        let text_len = out.dlfo_map_end as usize - out.dlfo_map_start as usize;
-
-        trace!(
-            "dwarf info; map: ({:p}, {:x}), dwarf: {:p}",
-            out.dlfo_map_start,
-            text_len,
-            out.dlfo_eh_frame
-        );
-        Some(DwarfInfo {
-            map: core::ptr::slice_from_raw_parts(out.dlfo_map_start as _, text_len),
-            dwarf: out.dlfo_eh_frame as _,
-        })
-    }
-}
-
-pub fn uwutables() {
-    //let UnwindTable;
-}