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use std::{fmt::Display, fs::File, io::Read};
use macho_unwind_info::opcodes::{OpcodeArm64, OpcodeX86, OpcodeX86_64};
use macho_unwind_info::UnwindInfo;
use object::{Architecture, ObjectSection};
fn main() {
let mut args = std::env::args_os().skip(1);
if args.len() < 1 {
eprintln!("Usage: {} <path>", std::env::args().next().unwrap());
std::process::exit(1);
}
let path = args.next().unwrap();
let mut data = Vec::new();
let mut file = File::open(path).unwrap();
file.read_to_end(&mut data).unwrap();
let data = &data[..];
let file = object::File::parse(data).expect("Could not parse object file");
use object::Object;
let unwind_info_data_section = file
.section_by_name_bytes(b"__unwind_info")
.expect("Could not find __unwind_info section");
let data = unwind_info_data_section.data().unwrap();
let arch = file.architecture();
let info = UnwindInfo::parse(data).unwrap();
let address_range = info.address_range();
println!(
"Unwind info for address range 0x{:08x}-0x{:08x}",
address_range.start, address_range.end
);
println!();
let mut function_iter = info.functions();
while let Some(function) = function_iter.next().unwrap() {
print_entry(function.start_address, function.opcode, arch);
}
}
fn print_entry(address: u32, opcode: u32, arch: Architecture) {
match arch {
Architecture::I386 => print_entry_impl(address, OpcodeX86::parse(opcode)),
Architecture::X86_64 => print_entry_impl(address, OpcodeX86_64::parse(opcode)),
Architecture::Aarch64 => print_entry_impl(address, OpcodeArm64::parse(opcode)),
_ => {}
}
}
fn print_entry_impl(address: u32, opcode: impl Display) {
println!("0x{:08x}: {}", address, opcode);
}