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This commit is contained in:
nora 2025-10-29 22:13:20 +01:00
parent c0cf3786f4
commit 94f3233c55
7 changed files with 292 additions and 220 deletions
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22
src/dwarf/divination.rs
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@ -112,6 +112,10 @@ pub(crate) fn eh_frame(addr: Addr) -> Option<*const u8> {
#[instrument]
pub(crate) fn frame_info(addr: Addr) -> Option<()> {
let symbol = crate::identify::identify(addr.addr());
debug!("getting frame information of {symbol:?}");
unsafe {
let header_ptr = eh_frame_hdr_ptr(addr)?;
let eh_frame_header_addr = header_ptr.addr();
@ -128,6 +132,7 @@ pub(crate) fn frame_info(addr: Addr) -> Option<()> {
let table_ptr = ptr.add(fde_count_size);
/*
let mut walk_table_ptr = table_ptr;
for i in 0..fde_count {
let (read, initial_loc) =
@ -139,6 +144,7 @@ pub(crate) fn frame_info(addr: Addr) -> Option<()> {
trace!(idx = ?i, "eh_frame_hdr table initial_loc={initial_loc:x} address={address:x}");
}
*/
let table_half_entry_size = header.table_enc.size();
@ -195,10 +201,24 @@ pub(crate) fn frame_info(addr: Addr) -> Option<()> {
trace!("ptr is valid");
trace!("FDE offset to .eh_frame: {:x}", fde_ptr.addr() - (eh_frame_ptr));
trace!(
"FDE offset to .eh_frame: {:x}",
fde_ptr.addr() - (eh_frame_ptr)
);
let fde = crate::dwarf::parse::parse_fde_from_ptr(fde_ptr, eh_frame_ptr).unwrap();
let fde_base_offset = addr.addr() - fde.initial_location;
trace!("fde initial location {:x}, address offset of {fde_base_offset}", fde.initial_location);
crate::dwarf::parse::process_instructions_cfa(
&fde.cie,
fde.initial_instructions,
fde.instructions,
fde_base_offset,
);
todo!()
}
}