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Diffstat (limited to 'vendor/addr2line-0.17.0/examples/addr2line.rs')
| -rw-r--r-- | vendor/addr2line-0.17.0/examples/addr2line.rs | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/vendor/addr2line-0.17.0/examples/addr2line.rs b/vendor/addr2line-0.17.0/examples/addr2line.rs new file mode 100644 index 000000000..4b228a706 --- /dev/null +++ b/vendor/addr2line-0.17.0/examples/addr2line.rs @@ -0,0 +1,299 @@ +extern crate addr2line; +extern crate clap; +extern crate fallible_iterator; +extern crate gimli; +extern crate memmap; +extern crate object; +extern crate typed_arena; + +use std::borrow::Cow; +use std::fs::File; +use std::io::{BufRead, Lines, StdinLock, Write}; +use std::path::Path; + +use clap::{App, Arg, Values}; +use fallible_iterator::FallibleIterator; +use object::{Object, ObjectSection}; +use typed_arena::Arena; + +use addr2line::{Context, Location}; + +fn parse_uint_from_hex_string(string: &str) -> u64 { + if string.len() > 2 && string.starts_with("0x") { + u64::from_str_radix(&string[2..], 16).expect("Failed to parse address") + } else { + u64::from_str_radix(string, 16).expect("Failed to parse address") + } +} + +enum Addrs<'a> { + Args(Values<'a>), + Stdin(Lines<StdinLock<'a>>), +} + +impl<'a> Iterator for Addrs<'a> { + type Item = u64; + + fn next(&mut self) -> Option<u64> { + let text = match *self { + Addrs::Args(ref mut vals) => vals.next().map(Cow::from), + Addrs::Stdin(ref mut lines) => lines.next().map(Result::unwrap).map(Cow::from), + }; + text.as_ref() + .map(Cow::as_ref) + .map(parse_uint_from_hex_string) + } +} + +fn print_loc(loc: &Option<Location>, basenames: bool, llvm: bool) { + if let Some(ref loc) = *loc { + let file = loc.file.as_ref().unwrap(); + let path = if basenames { + Path::new(Path::new(file).file_name().unwrap()) + } else { + Path::new(file) + }; + print!("{}:", path.display()); + if llvm { + print!("{}:{}", loc.line.unwrap_or(0), loc.column.unwrap_or(0)); + } else if let Some(line) = loc.line { + print!("{}", line); + } else { + print!("?"); + } + println!(); + } else if llvm { + println!("??:0:0"); + } else { + println!("??:?"); + } +} + +fn print_function(name: &str, language: Option<gimli::DwLang>, demangle: bool) { + if demangle { + print!("{}", addr2line::demangle_auto(Cow::from(name), language)); + } else { + print!("{}", name); + } +} + +fn load_file_section<'input, 'arena, Endian: gimli::Endianity>( + id: gimli::SectionId, + file: &object::File<'input>, + endian: Endian, + arena_data: &'arena Arena<Cow<'input, [u8]>>, +) -> Result<gimli::EndianSlice<'arena, Endian>, ()> { + // TODO: Unify with dwarfdump.rs in gimli. + let name = id.name(); + match file.section_by_name(name) { + Some(section) => match section.uncompressed_data().unwrap() { + Cow::Borrowed(b) => Ok(gimli::EndianSlice::new(b, endian)), + Cow::Owned(b) => Ok(gimli::EndianSlice::new(arena_data.alloc(b.into()), endian)), + }, + None => Ok(gimli::EndianSlice::new(&[][..], endian)), + } +} + +fn main() { + let matches = App::new("hardliner") + .version("0.1") + .about("A fast addr2line clone") + .arg( + Arg::with_name("exe") + .short("e") + .long("exe") + .value_name("filename") + .help( + "Specify the name of the executable for which addresses should be translated.", + ) + .required(true), + ) + .arg( + Arg::with_name("sup") + .long("sup") + .value_name("filename") + .help("Path to supplementary object file."), + ) + .arg( + Arg::with_name("functions") + .short("f") + .long("functions") + .help("Display function names as well as file and line number information."), + ) + .arg( + Arg::with_name("pretty") + .short("p") + .long("pretty-print") + .help( + "Make the output more human friendly: each location are printed on \ + one line.", + ), + ) + .arg(Arg::with_name("inlines").short("i").long("inlines").help( + "If the address belongs to a function that was inlined, the source \ + information for all enclosing scopes back to the first non-inlined \ + function will also be printed.", + )) + .arg( + Arg::with_name("addresses") + .short("a") + .long("addresses") + .help( + "Display the address before the function name, file and line \ + number information.", + ), + ) + .arg( + Arg::with_name("basenames") + .short("s") + .long("basenames") + .help("Display only the base of each file name."), + ) + .arg(Arg::with_name("demangle").short("C").long("demangle").help( + "Demangle function names. \ + Specifying a specific demangling style (like GNU addr2line) \ + is not supported. (TODO)", + )) + .arg( + Arg::with_name("llvm") + .long("llvm") + .help("Display output in the same format as llvm-symbolizer."), + ) + .arg( + Arg::with_name("addrs") + .takes_value(true) + .multiple(true) + .help("Addresses to use instead of reading from stdin."), + ) + .get_matches(); + + let arena_data = Arena::new(); + + let do_functions = matches.is_present("functions"); + let do_inlines = matches.is_present("inlines"); + let pretty = matches.is_present("pretty"); + let print_addrs = matches.is_present("addresses"); + let basenames = matches.is_present("basenames"); + let demangle = matches.is_present("demangle"); + let llvm = matches.is_present("llvm"); + let path = matches.value_of("exe").unwrap(); + + let file = File::open(path).unwrap(); + let map = unsafe { memmap::Mmap::map(&file).unwrap() }; + let object = &object::File::parse(&*map).unwrap(); + + let endian = if object.is_little_endian() { + gimli::RunTimeEndian::Little + } else { + gimli::RunTimeEndian::Big + }; + + let mut load_section = |id: gimli::SectionId| -> Result<_, _> { + load_file_section(id, object, endian, &arena_data) + }; + + let sup_map; + let sup_object = if let Some(sup_path) = matches.value_of("sup") { + let sup_file = File::open(sup_path).unwrap(); + sup_map = unsafe { memmap::Mmap::map(&sup_file).unwrap() }; + Some(object::File::parse(&*sup_map).unwrap()) + } else { + None + }; + + let symbols = object.symbol_map(); + let mut dwarf = gimli::Dwarf::load(&mut load_section).unwrap(); + if let Some(ref sup_object) = sup_object { + let mut load_sup_section = |id: gimli::SectionId| -> Result<_, _> { + load_file_section(id, sup_object, endian, &arena_data) + }; + dwarf.load_sup(&mut load_sup_section).unwrap(); + } + + let ctx = Context::from_dwarf(dwarf).unwrap(); + + let stdin = std::io::stdin(); + let addrs = matches + .values_of("addrs") + .map(Addrs::Args) + .unwrap_or_else(|| Addrs::Stdin(stdin.lock().lines())); + + for probe in addrs { + if print_addrs { + if llvm { + print!("0x{:x}", probe); + } else { + print!("0x{:016x}", probe); + } + if pretty { + print!(": "); + } else { + println!(); + } + } + + if do_functions || do_inlines { + let mut printed_anything = false; + let mut frames = ctx.find_frames(probe).unwrap().enumerate(); + while let Some((i, frame)) = frames.next().unwrap() { + if pretty && i != 0 { + print!(" (inlined by) "); + } + + if do_functions { + if let Some(func) = frame.function { + print_function(&func.raw_name().unwrap(), func.language, demangle); + } else if let Some(name) = symbols.get(probe).map(|x| x.name()) { + print_function(name, None, demangle); + } else { + print!("??"); + } + + if pretty { + print!(" at "); + } else { + println!(); + } + } + + print_loc(&frame.location, basenames, llvm); + + printed_anything = true; + + if !do_inlines { + break; + } + } + + if !printed_anything { + if do_functions { + if let Some(name) = symbols.get(probe).map(|x| x.name()) { + print_function(name, None, demangle); + } else { + print!("??"); + } + + if pretty { + print!(" at "); + } else { + println!(); + } + } + + if llvm { + println!("??:0:0"); + } else { + println!("??:?"); + } + } + } else { + let loc = ctx.find_location(probe).unwrap(); + print_loc(&loc, basenames, llvm); + } + + if llvm { + println!(); + } + std::io::stdout().flush().unwrap(); + } +} |