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Initial vendor packages

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Signed-off-by: Valentin Popov <valentin@popov.link>
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Valentin Popov
2024-01-08 01:21:28 +04:00
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# `addr2line` Change Log
--------------------------------------------------------------------------------
## 0.21.0 (2023/08/12)
### Breaking changes
* Updated `gimli`, `object`, and `fallible-iterator` dependencies.
### Changed
* The minimum supported rust version is 1.65.0.
* Store boxed slices instead of `Vec` objects in `Context`.
[#278](https://github.com/gimli-rs/addr2line/pull/278)
--------------------------------------------------------------------------------
## 0.20.0 (2023/04/15)
### Breaking changes
* The minimum supported rust version is 1.58.0.
* Changed `Context::find_frames` to return `LookupResult`.
Use `LookupResult::skip_all_loads` to obtain the result without loading split DWARF.
[#260](https://github.com/gimli-rs/addr2line/pull/260)
* Replaced `Context::find_dwarf_unit` with `Context::find_dwarf_and_unit`.
[#260](https://github.com/gimli-rs/addr2line/pull/260)
* Updated `object` dependency.
### Changed
* Fix handling of file index 0 for DWARF 5.
[#264](https://github.com/gimli-rs/addr2line/pull/264)
### Added
* Added types and methods to support loading split DWARF:
`LookupResult`, `SplitDwarfLoad`, `SplitDwarfLoader`, `Context::preload_units`.
[#260](https://github.com/gimli-rs/addr2line/pull/260)
[#262](https://github.com/gimli-rs/addr2line/pull/262)
[#263](https://github.com/gimli-rs/addr2line/pull/263)
--------------------------------------------------------------------------------
## 0.19.0 (2022/11/24)
### Breaking changes
* Updated `gimli` and `object` dependencies.
--------------------------------------------------------------------------------
## 0.18.0 (2022/07/16)
### Breaking changes
* Updated `object` dependency.
### Changed
* Fixed handling of relative path for `DW_AT_comp_dir`.
[#239](https://github.com/gimli-rs/addr2line/pull/239)
* Fixed handling of `DW_FORM_addrx` for DWARF 5 support.
[#243](https://github.com/gimli-rs/addr2line/pull/243)
* Fixed handling of units that are missing range information.
[#249](https://github.com/gimli-rs/addr2line/pull/249)
--------------------------------------------------------------------------------
## 0.17.0 (2021/10/24)
### Breaking changes
* Updated `gimli` and `object` dependencies.
### Changed
* Use `skip_attributes` to improve performance.
[#236](https://github.com/gimli-rs/addr2line/pull/236)
--------------------------------------------------------------------------------
## 0.16.0 (2021/07/26)
### Breaking changes
* Updated `gimli` and `object` dependencies.
--------------------------------------------------------------------------------
## 0.15.2 (2021/06/04)
### Fixed
* Allow `Context` to be `Send`.
[#219](https://github.com/gimli-rs/addr2line/pull/219)
--------------------------------------------------------------------------------
## 0.15.1 (2021/05/02)
### Fixed
* Don't ignore aranges with address 0.
[#217](https://github.com/gimli-rs/addr2line/pull/217)
--------------------------------------------------------------------------------
## 0.15.0 (2021/05/02)
### Breaking changes
* Updated `gimli` and `object` dependencies.
[#215](https://github.com/gimli-rs/addr2line/pull/215)
* Added `debug_aranges` parameter to `Context::from_sections`.
[#200](https://github.com/gimli-rs/addr2line/pull/200)
### Added
* Added `.debug_aranges` support.
[#200](https://github.com/gimli-rs/addr2line/pull/200)
* Added supplementary object file support.
[#208](https://github.com/gimli-rs/addr2line/pull/208)
### Fixed
* Fixed handling of Windows paths in locations.
[#209](https://github.com/gimli-rs/addr2line/pull/209)
* examples/addr2line: Flush stdout after each response.
[#210](https://github.com/gimli-rs/addr2line/pull/210)
* examples/addr2line: Avoid copying every section.
[#213](https://github.com/gimli-rs/addr2line/pull/213)
--------------------------------------------------------------------------------
## 0.14.1 (2020/12/31)
### Fixed
* Fix location lookup for skeleton units.
[#201](https://github.com/gimli-rs/addr2line/pull/201)
### Added
* Added `Context::find_location_range`.
[#196](https://github.com/gimli-rs/addr2line/pull/196)
[#199](https://github.com/gimli-rs/addr2line/pull/199)
--------------------------------------------------------------------------------
## 0.14.0 (2020/10/27)
### Breaking changes
* Updated `gimli` and `object` dependencies.
### Fixed
* Handle units that only have line information.
[#188](https://github.com/gimli-rs/addr2line/pull/188)
* Handle DWARF units with version <= 4 and no `DW_AT_name`.
[#191](https://github.com/gimli-rs/addr2line/pull/191)
* Fix handling of `DW_FORM_ref_addr`.
[#193](https://github.com/gimli-rs/addr2line/pull/193)
--------------------------------------------------------------------------------
## 0.13.0 (2020/07/07)
### Breaking changes
* Updated `gimli` and `object` dependencies.
* Added `rustc-dep-of-std` feature.
[#166](https://github.com/gimli-rs/addr2line/pull/166)
### Changed
* Improve performance by parsing function contents lazily.
[#178](https://github.com/gimli-rs/addr2line/pull/178)
* Don't skip `.debug_info` and `.debug_line` entries with a zero address.
[#182](https://github.com/gimli-rs/addr2line/pull/182)
--------------------------------------------------------------------------------
## 0.12.2 (2020/06/21)
### Fixed
* Avoid linear search for `DW_FORM_ref_addr`.
[#175](https://github.com/gimli-rs/addr2line/pull/175)
--------------------------------------------------------------------------------
## 0.12.1 (2020/05/19)
### Fixed
* Handle units with overlapping address ranges.
[#163](https://github.com/gimli-rs/addr2line/pull/163)
* Don't assert for functions with overlapping address ranges.
[#168](https://github.com/gimli-rs/addr2line/pull/168)
--------------------------------------------------------------------------------
## 0.12.0 (2020/05/12)
### Breaking changes
* Updated `gimli` and `object` dependencies.
* Added more optional features: `smallvec` and `fallible-iterator`.
[#160](https://github.com/gimli-rs/addr2line/pull/160)
### Added
* Added `Context::dwarf` and `Context::find_dwarf_unit`.
[#159](https://github.com/gimli-rs/addr2line/pull/159)
### Changed
* Removed `lazycell` dependency.
[#160](https://github.com/gimli-rs/addr2line/pull/160)
--------------------------------------------------------------------------------
## 0.11.0 (2020/01/11)
### Breaking changes
* Updated `gimli` and `object` dependencies.
* [#130](https://github.com/gimli-rs/addr2line/pull/130)
Changed `Location::file` from `Option<String>` to `Option<&str>`.
This required adding lifetime parameters to `Location` and other structs that
contain it.
* [#152](https://github.com/gimli-rs/addr2line/pull/152)
Changed `Location::line` and `Location::column` from `Option<u64>`to `Option<u32>`.
* [#156](https://github.com/gimli-rs/addr2line/pull/156)
Deleted `alloc` feature, and fixed `no-std` builds with stable rust.
Removed default `Reader` parameter for `Context`, and added `ObjectContext` instead.
### Added
* [#134](https://github.com/gimli-rs/addr2line/pull/134)
Added `Context::from_dwarf`.
### Changed
* [#133](https://github.com/gimli-rs/addr2line/pull/133)
Fixed handling of units that can't be parsed.
* [#155](https://github.com/gimli-rs/addr2line/pull/155)
Fixed `addr2line` output to match binutils.
* [#130](https://github.com/gimli-rs/addr2line/pull/130)
Improved `.debug_line` parsing performance.
* [#148](https://github.com/gimli-rs/addr2line/pull/148)
[#150](https://github.com/gimli-rs/addr2line/pull/150)
[#151](https://github.com/gimli-rs/addr2line/pull/151)
[#152](https://github.com/gimli-rs/addr2line/pull/152)
Improved `.debug_info` parsing performance.
* [#137](https://github.com/gimli-rs/addr2line/pull/137)
[#138](https://github.com/gimli-rs/addr2line/pull/138)
[#139](https://github.com/gimli-rs/addr2line/pull/139)
[#140](https://github.com/gimli-rs/addr2line/pull/140)
[#146](https://github.com/gimli-rs/addr2line/pull/146)
Improved benchmarks.
--------------------------------------------------------------------------------
## 0.10.0 (2019/07/07)
### Breaking changes
* [#127](https://github.com/gimli-rs/addr2line/pull/127)
Update `gimli`.
--------------------------------------------------------------------------------
## 0.9.0 (2019/05/02)
### Breaking changes
* [#121](https://github.com/gimli-rs/addr2line/pull/121)
Update `gimli`, `object`, and `fallible-iterator` dependencies.
### Added
* [#121](https://github.com/gimli-rs/addr2line/pull/121)
Reexport `gimli`, `object`, and `fallible-iterator`.
--------------------------------------------------------------------------------
## 0.8.0 (2019/02/06)
### Breaking changes
* [#107](https://github.com/gimli-rs/addr2line/pull/107)
Update `object` dependency to 0.11. This is part of the public API.
### Added
* [#101](https://github.com/gimli-rs/addr2line/pull/101)
Add `object` feature (enabled by default). Disable this feature to remove
the `object` dependency and `Context::new` API.
* [#102](https://github.com/gimli-rs/addr2line/pull/102)
Add `std` (enabled by default) and `alloc` features.
### Changed
* [#108](https://github.com/gimli-rs/addr2line/issues/108)
`demangle` no longer outputs the hash for rust symbols.
* [#109](https://github.com/gimli-rs/addr2line/issues/109)
Set default `R` for `Context<R>`.

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PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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Copyright (c) 2016-2018 The gimli Developers
Permission is hereby granted, free of charge, to any
person obtaining a copy of this software and associated
documentation files (the "Software"), to deal in the
Software without restriction, including without
limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software
is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice
shall be included in all copies or substantial portions
of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

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# addr2line
[![](https://img.shields.io/crates/v/addr2line.svg)](https://crates.io/crates/addr2line)
[![](https://img.shields.io/docsrs/addr2line.svg)](https://docs.rs/addr2line)
[![Coverage Status](https://coveralls.io/repos/github/gimli-rs/addr2line/badge.svg?branch=master)](https://coveralls.io/github/gimli-rs/addr2line?branch=master)
A cross-platform library for retrieving per-address debug information
from files with DWARF debug information.
`addr2line` uses [`gimli`](https://github.com/gimli-rs/gimli) to parse
the debug information, and exposes an interface for finding
the source file, line number, and wrapping function for instruction
addresses within the target program. These lookups can either be
performed programmatically through `Context::find_location` and
`Context::find_frames`, or via the included example binary,
`addr2line` (named and modelled after the equivalent utility from
[GNU binutils](https://sourceware.org/binutils/docs/binutils/addr2line.html)).
# Quickstart
- Add the [`addr2line` crate](https://crates.io/crates/addr2line) to your `Cargo.toml`
- Load the file and parse it with [`addr2line::object::read::File::parse`](https://docs.rs/object/*/object/read/struct.File.html#method.parse)
- Pass the parsed file to [`addr2line::Context::new` ](https://docs.rs/addr2line/*/addr2line/struct.Context.html#method.new)
- Use [`addr2line::Context::find_location`](https://docs.rs/addr2line/*/addr2line/struct.Context.html#method.find_location)
or [`addr2line::Context::find_frames`](https://docs.rs/addr2line/*/addr2line/struct.Context.html#method.find_frames)
to look up debug information for an address
# Performance
`addr2line` optimizes for speed over memory by caching parsed information.
The DWARF information is parsed lazily where possible.
The library aims to perform similarly to equivalent existing tools such
as `addr2line` from binutils, `eu-addr2line` from elfutils, and
`llvm-symbolize` from the llvm project, and in the past some benchmarking
was done that indicates a comparable performance.
## License
Licensed under either of
* Apache License, Version 2.0 ([`LICENSE-APACHE`](./LICENSE-APACHE) or https://www.apache.org/licenses/LICENSE-2.0)
* MIT license ([`LICENSE-MIT`](./LICENSE-MIT) or https://opensource.org/licenses/MIT)
at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
dual licensed as above, without any additional terms or conditions.

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v <- read.table(file("stdin"))
t <- data.frame(prog=v[,1], funcs=(v[,2]=="func"), time=v[,3], mem=v[,4], stringsAsFactors=FALSE)
t$prog <- as.character(t$prog)
t$prog[t$prog == "master"] <- "gimli-rs/addr2line"
t$funcs[t$funcs == TRUE] <- "With functions"
t$funcs[t$funcs == FALSE] <- "File/line only"
t$mem = t$mem / 1024.0
library(ggplot2)
p <- ggplot(data=t, aes(x=prog, y=time, fill=prog))
p <- p + geom_bar(stat = "identity")
p <- p + facet_wrap(~ funcs)
p <- p + theme(axis.title.x=element_blank(), axis.text.x=element_blank(), axis.ticks.x=element_blank())
p <- p + ylab("time (s)") + ggtitle("addr2line runtime")
ggsave('time.png',plot=p,width=10,height=6)
p <- ggplot(data=t, aes(x=prog, y=mem, fill=prog))
p <- p + geom_bar(stat = "identity")
p <- p + facet_wrap(~ funcs)
p <- p + theme(axis.title.x=element_blank(), axis.text.x=element_blank(), axis.ticks.x=element_blank())
p <- p + ylab("memory (kB)") + ggtitle("addr2line memory usage")
ggsave('memory.png',plot=p,width=10,height=6)

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#!/bin/bash
if [[ $# -le 1 ]]; then
echo "Usage: $0 <executable> [<addresses>] REFS..."
exit 1
fi
target="$1"
shift
addresses=""
if [[ -e "$1" ]]; then
addresses="$1"
shift
fi
# path to "us"
# readlink -f, but more portable:
dirname=$(perl -e 'use Cwd "abs_path";print abs_path(shift)' "$(dirname "$0")")
# https://stackoverflow.com/a/2358432/472927
{
# compile all refs
pushd "$dirname" > /dev/null
# if the user has some local changes, preserve them
nstashed=$(git stash list | wc -l)
echo "==> Stashing any local modifications"
git stash --keep-index > /dev/null
popstash() {
# https://stackoverflow.com/q/24520791/472927
if [[ "$(git stash list | wc -l)" -ne "$nstashed" ]]; then
echo "==> Restoring stashed state"
git stash pop > /dev/null
fi
}
# if the user has added stuff to the index, abort
if ! git diff-index --quiet HEAD --; then
echo "Refusing to overwrite outstanding git changes"
popstash
exit 2
fi
current=$(git symbolic-ref --short HEAD)
for ref in "$@"; do
echo "==> Compiling $ref"
git checkout -q "$ref"
commit=$(git rev-parse HEAD)
fn="target/release/addr2line-$commit"
if [[ ! -e "$fn" ]]; then
cargo build --release --example addr2line
cp target/release/examples/addr2line "$fn"
fi
if [[ "$ref" != "$commit" ]]; then
ln -sfn "addr2line-$commit" target/release/addr2line-"$ref"
fi
done
git checkout -q "$current"
popstash
popd > /dev/null
# get us some addresses to look up
if [[ -z "$addresses" ]]; then
echo "==> Looking for benchmarking addresses (this may take a while)"
addresses=$(mktemp tmp.XXXXXXXXXX)
objdump -C -x --disassemble -l "$target" \
| grep -P '0[048]:' \
| awk '{print $1}' \
| sed 's/:$//' \
> "$addresses"
echo " -> Addresses stored in $addresses; you should re-use it next time"
fi
run() {
func="$1"
name="$2"
cmd="$3"
args="$4"
printf "%s\t%s\t" "$name" "$func"
if [[ "$cmd" =~ llvm-symbolizer ]]; then
/usr/bin/time -f '%e\t%M' "$cmd" $args -obj="$target" < "$addresses" 2>&1 >/dev/null
else
/usr/bin/time -f '%e\t%M' "$cmd" $args -e "$target" < "$addresses" 2>&1 >/dev/null
fi
}
# run without functions
log1=$(mktemp tmp.XXXXXXXXXX)
echo "==> Benchmarking"
run nofunc binutils addr2line >> "$log1"
#run nofunc elfutils eu-addr2line >> "$log1"
run nofunc llvm-sym llvm-symbolizer -functions=none >> "$log1"
for ref in "$@"; do
run nofunc "$ref" "$dirname/target/release/addr2line-$ref" >> "$log1"
done
cat "$log1" | column -t
# run with functions
log2=$(mktemp tmp.XXXXXXXXXX)
echo "==> Benchmarking with -f"
run func binutils addr2line "-f -i" >> "$log2"
#run func elfutils eu-addr2line "-f -i" >> "$log2"
run func llvm-sym llvm-symbolizer "-functions=linkage -demangle=0" >> "$log2"
for ref in "$@"; do
run func "$ref" "$dirname/target/release/addr2line-$ref" "-f -i" >> "$log2"
done
cat "$log2" | column -t
cat "$log2" >> "$log1"; rm "$log2"
echo "==> Plotting"
Rscript --no-readline --no-restore --no-save "$dirname/bench.plot.r" < "$log1"
echo "==> Cleaning up"
rm "$log1"
exit 0
}

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#!/bin/sh
# Run tarpaulin and pycobertura to generate coverage.html.
cargo tarpaulin --skip-clean --out Xml
pycobertura show --format html --output coverage.html cobertura.xml

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use std::borrow::Cow;
use std::fs::File;
use std::io::{BufRead, Lines, StdinLock, Write};
use std::path::{Path, PathBuf};
use clap::{Arg, ArgAction, Command};
use fallible_iterator::FallibleIterator;
use object::{Object, ObjectSection, SymbolMap, SymbolMapName};
use typed_arena::Arena;
use addr2line::{Context, Location};
fn parse_uint_from_hex_string(string: &str) -> Option<u64> {
if string.len() > 2 && string.starts_with("0x") {
u64::from_str_radix(&string[2..], 16).ok()
} else {
u64::from_str_radix(string, 16).ok()
}
}
enum Addrs<'a> {
Args(clap::parser::ValuesRef<'a, String>),
Stdin(Lines<StdinLock<'a>>),
}
impl<'a> Iterator for Addrs<'a> {
type Item = Option<u64>;
fn next(&mut self) -> Option<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(loc) = loc {
if let Some(ref file) = loc.file.as_ref() {
let path = if basenames {
Path::new(Path::new(file).file_name().unwrap())
} else {
Path::new(file)
};
print!("{}:", path.display());
} else {
print!("??:");
}
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!("??:0");
}
}
fn print_function(name: Option<&str>, language: Option<gimli::DwLang>, demangle: bool) {
if let Some(name) = name {
if demangle {
print!("{}", addr2line::demangle_auto(Cow::from(name), language));
} else {
print!("{}", name);
}
} else {
print!("??");
}
}
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 find_name_from_symbols<'a>(
symbols: &'a SymbolMap<SymbolMapName<'_>>,
probe: u64,
) -> Option<&'a str> {
symbols.get(probe).map(|x| x.name())
}
struct Options<'a> {
do_functions: bool,
do_inlines: bool,
pretty: bool,
print_addrs: bool,
basenames: bool,
demangle: bool,
llvm: bool,
exe: &'a PathBuf,
sup: Option<&'a PathBuf>,
}
fn main() {
let matches = Command::new("addr2line")
.version(env!("CARGO_PKG_VERSION"))
.about("A fast addr2line Rust port")
.max_term_width(100)
.args(&[
Arg::new("exe")
.short('e')
.long("exe")
.value_name("filename")
.value_parser(clap::value_parser!(PathBuf))
.help(
"Specify the name of the executable for which addresses should be translated.",
)
.required(true),
Arg::new("sup")
.long("sup")
.value_name("filename")
.value_parser(clap::value_parser!(PathBuf))
.help("Path to supplementary object file."),
Arg::new("functions")
.short('f')
.long("functions")
.action(ArgAction::SetTrue)
.help("Display function names as well as file and line number information."),
Arg::new("pretty").short('p').long("pretty-print")
.action(ArgAction::SetTrue)
.help(
"Make the output more human friendly: each location are printed on one line.",
),
Arg::new("inlines").short('i').long("inlines")
.action(ArgAction::SetTrue)
.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::new("addresses").short('a').long("addresses")
.action(ArgAction::SetTrue)
.help(
"Display the address before the function name, file and line number information.",
),
Arg::new("basenames")
.short('s')
.long("basenames")
.action(ArgAction::SetTrue)
.help("Display only the base of each file name."),
Arg::new("demangle").short('C').long("demangle")
.action(ArgAction::SetTrue)
.help(
"Demangle function names. \
Specifying a specific demangling style (like GNU addr2line) is not supported. \
(TODO)"
),
Arg::new("llvm")
.long("llvm")
.action(ArgAction::SetTrue)
.help("Display output in the same format as llvm-symbolizer."),
Arg::new("addrs")
.action(ArgAction::Append)
.help("Addresses to use instead of reading from stdin."),
])
.get_matches();
let arena_data = Arena::new();
let opts = Options {
do_functions: matches.get_flag("functions"),
do_inlines: matches.get_flag("inlines"),
pretty: matches.get_flag("pretty"),
print_addrs: matches.get_flag("addresses"),
basenames: matches.get_flag("basenames"),
demangle: matches.get_flag("demangle"),
llvm: matches.get_flag("llvm"),
exe: matches.get_one::<PathBuf>("exe").unwrap(),
sup: matches.get_one::<PathBuf>("sup"),
};
let file = File::open(opts.exe).unwrap();
let map = unsafe { memmap2::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) = opts.sup {
let sup_file = File::open(sup_path).unwrap();
sup_map = unsafe { memmap2::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 mut split_dwarf_loader = addr2line::builtin_split_dwarf_loader::SplitDwarfLoader::new(
|data, endian| {
gimli::EndianSlice::new(arena_data.alloc(Cow::Owned(data.into_owned())), endian)
},
Some(opts.exe.clone()),
);
let ctx = Context::from_dwarf(dwarf).unwrap();
let stdin = std::io::stdin();
let addrs = matches
.get_many::<String>("addrs")
.map(Addrs::Args)
.unwrap_or_else(|| Addrs::Stdin(stdin.lock().lines()));
for probe in addrs {
if opts.print_addrs {
let addr = probe.unwrap_or(0);
if opts.llvm {
print!("0x{:x}", addr);
} else {
print!("0x{:016x}", addr);
}
if opts.pretty {
print!(": ");
} else {
println!();
}
}
if opts.do_functions || opts.do_inlines {
let mut printed_anything = false;
if let Some(probe) = probe {
let frames = ctx.find_frames(probe);
let frames = split_dwarf_loader.run(frames).unwrap();
let mut frames = frames.enumerate();
while let Some((i, frame)) = frames.next().unwrap() {
if opts.pretty && i != 0 {
print!(" (inlined by) ");
}
if opts.do_functions {
if let Some(func) = frame.function {
print_function(
func.raw_name().ok().as_ref().map(AsRef::as_ref),
func.language,
opts.demangle,
);
} else {
let name = find_name_from_symbols(&symbols, probe);
print_function(name, None, opts.demangle);
}
if opts.pretty {
print!(" at ");
} else {
println!();
}
}
print_loc(frame.location.as_ref(), opts.basenames, opts.llvm);
printed_anything = true;
if !opts.do_inlines {
break;
}
}
}
if !printed_anything {
if opts.do_functions {
let name = probe.and_then(|probe| find_name_from_symbols(&symbols, probe));
print_function(name, None, opts.demangle);
if opts.pretty {
print!(" at ");
} else {
println!();
}
}
print_loc(None, opts.basenames, opts.llvm);
}
} else {
let loc = probe.and_then(|probe| ctx.find_location(probe).unwrap());
print_loc(loc.as_ref(), opts.basenames, opts.llvm);
}
if opts.llvm {
println!();
}
std::io::stdout().flush().unwrap();
}
}

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use alloc::borrow::Cow;
use alloc::sync::Arc;
use std::fs::File;
use std::path::PathBuf;
use object::Object;
use crate::{LookupContinuation, LookupResult};
#[cfg(unix)]
fn convert_path<R: gimli::Reader<Endian = gimli::RunTimeEndian>>(
r: &R,
) -> Result<PathBuf, gimli::Error> {
use std::ffi::OsStr;
use std::os::unix::ffi::OsStrExt;
let bytes = r.to_slice()?;
let s = OsStr::from_bytes(&bytes);
Ok(PathBuf::from(s))
}
#[cfg(not(unix))]
fn convert_path<R: gimli::Reader<Endian = gimli::RunTimeEndian>>(
r: &R,
) -> Result<PathBuf, gimli::Error> {
let bytes = r.to_slice()?;
let s = std::str::from_utf8(&bytes).map_err(|_| gimli::Error::BadUtf8)?;
Ok(PathBuf::from(s))
}
fn load_section<'data: 'file, 'file, O, R, F>(
id: gimli::SectionId,
file: &'file O,
endian: R::Endian,
loader: &mut F,
) -> Result<R, gimli::Error>
where
O: object::Object<'data, 'file>,
R: gimli::Reader<Endian = gimli::RunTimeEndian>,
F: FnMut(Cow<'data, [u8]>, R::Endian) -> R,
{
use object::ObjectSection;
let data = id
.dwo_name()
.and_then(|dwo_name| {
file.section_by_name(dwo_name)
.and_then(|section| section.uncompressed_data().ok())
})
.unwrap_or(Cow::Borrowed(&[]));
Ok(loader(data, endian))
}
/// A simple builtin split DWARF loader.
pub struct SplitDwarfLoader<R, F>
where
R: gimli::Reader<Endian = gimli::RunTimeEndian>,
F: FnMut(Cow<'_, [u8]>, R::Endian) -> R,
{
loader: F,
dwarf_package: Option<gimli::DwarfPackage<R>>,
}
impl<R, F> SplitDwarfLoader<R, F>
where
R: gimli::Reader<Endian = gimli::RunTimeEndian>,
F: FnMut(Cow<'_, [u8]>, R::Endian) -> R,
{
fn load_dwarf_package(loader: &mut F, path: Option<PathBuf>) -> Option<gimli::DwarfPackage<R>> {
let mut path = path.map(Ok).unwrap_or_else(std::env::current_exe).ok()?;
let dwp_extension = path
.extension()
.map(|previous_extension| {
let mut previous_extension = previous_extension.to_os_string();
previous_extension.push(".dwp");
previous_extension
})
.unwrap_or_else(|| "dwp".into());
path.set_extension(dwp_extension);
let file = File::open(&path).ok()?;
let map = unsafe { memmap2::Mmap::map(&file).ok()? };
let dwp = object::File::parse(&*map).ok()?;
let endian = if dwp.is_little_endian() {
gimli::RunTimeEndian::Little
} else {
gimli::RunTimeEndian::Big
};
let empty = loader(Cow::Borrowed(&[]), endian);
gimli::DwarfPackage::load(
|section_id| load_section(section_id, &dwp, endian, loader),
empty,
)
.ok()
}
/// Create a new split DWARF loader.
pub fn new(mut loader: F, path: Option<PathBuf>) -> SplitDwarfLoader<R, F> {
let dwarf_package = SplitDwarfLoader::load_dwarf_package(&mut loader, path);
SplitDwarfLoader {
loader,
dwarf_package,
}
}
/// Run the provided `LookupResult` to completion, loading any necessary
/// split DWARF along the way.
pub fn run<L>(&mut self, mut l: LookupResult<L>) -> L::Output
where
L: LookupContinuation<Buf = R>,
{
loop {
let (load, continuation) = match l {
LookupResult::Output(output) => break output,
LookupResult::Load { load, continuation } => (load, continuation),
};
let mut r: Option<Arc<gimli::Dwarf<_>>> = None;
if let Some(dwp) = self.dwarf_package.as_ref() {
if let Ok(Some(cu)) = dwp.find_cu(load.dwo_id, &load.parent) {
r = Some(Arc::new(cu));
}
}
if r.is_none() {
let mut path = PathBuf::new();
if let Some(p) = load.comp_dir.as_ref() {
if let Ok(p) = convert_path(p) {
path.push(p);
}
}
if let Some(p) = load.path.as_ref() {
if let Ok(p) = convert_path(p) {
path.push(p);
}
}
if let Ok(file) = File::open(&path) {
if let Ok(map) = unsafe { memmap2::Mmap::map(&file) } {
if let Ok(file) = object::File::parse(&*map) {
let endian = if file.is_little_endian() {
gimli::RunTimeEndian::Little
} else {
gimli::RunTimeEndian::Big
};
r = gimli::Dwarf::load(|id| {
load_section(id, &file, endian, &mut self.loader)
})
.ok()
.map(|mut dwo_dwarf| {
dwo_dwarf.make_dwo(&load.parent);
Arc::new(dwo_dwarf)
});
}
}
}
}
l = continuation.resume(r);
}
}
}

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vendor/addr2line/src/function.rs vendored Normal file
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use alloc::boxed::Box;
use alloc::vec::Vec;
use core::cmp::Ordering;
use core::iter;
use crate::lazy::LazyCell;
use crate::maybe_small;
use crate::{Context, DebugFile, Error, RangeAttributes};
pub(crate) struct Functions<R: gimli::Reader> {
/// List of all `DW_TAG_subprogram` details in the unit.
pub(crate) functions: Box<
[(
gimli::UnitOffset<R::Offset>,
LazyCell<Result<Function<R>, Error>>,
)],
>,
/// List of `DW_TAG_subprogram` address ranges in the unit.
pub(crate) addresses: Box<[FunctionAddress]>,
}
/// A single address range for a function.
///
/// It is possible for a function to have multiple address ranges; this
/// is handled by having multiple `FunctionAddress` entries with the same
/// `function` field.
pub(crate) struct FunctionAddress {
range: gimli::Range,
/// An index into `Functions::functions`.
pub(crate) function: usize,
}
pub(crate) struct Function<R: gimli::Reader> {
pub(crate) dw_die_offset: gimli::UnitOffset<R::Offset>,
pub(crate) name: Option<R>,
/// List of all `DW_TAG_inlined_subroutine` details in this function.
inlined_functions: Box<[InlinedFunction<R>]>,
/// List of `DW_TAG_inlined_subroutine` address ranges in this function.
inlined_addresses: Box<[InlinedFunctionAddress]>,
}
pub(crate) struct InlinedFunctionAddress {
range: gimli::Range,
call_depth: usize,
/// An index into `Function::inlined_functions`.
function: usize,
}
pub(crate) struct InlinedFunction<R: gimli::Reader> {
pub(crate) dw_die_offset: gimli::UnitOffset<R::Offset>,
pub(crate) name: Option<R>,
pub(crate) call_file: Option<u64>,
pub(crate) call_line: u32,
pub(crate) call_column: u32,
}
impl<R: gimli::Reader> Functions<R> {
pub(crate) fn parse(
unit: &gimli::Unit<R>,
sections: &gimli::Dwarf<R>,
) -> Result<Functions<R>, Error> {
let mut functions = Vec::new();
let mut addresses = Vec::new();
let mut entries = unit.entries_raw(None)?;
while !entries.is_empty() {
let dw_die_offset = entries.next_offset();
if let Some(abbrev) = entries.read_abbreviation()? {
if abbrev.tag() == gimli::DW_TAG_subprogram {
let mut ranges = RangeAttributes::default();
for spec in abbrev.attributes() {
match entries.read_attribute(*spec) {
Ok(ref attr) => {
match attr.name() {
gimli::DW_AT_low_pc => match attr.value() {
gimli::AttributeValue::Addr(val) => {
ranges.low_pc = Some(val)
}
gimli::AttributeValue::DebugAddrIndex(index) => {
ranges.low_pc = Some(sections.address(unit, index)?);
}
_ => {}
},
gimli::DW_AT_high_pc => match attr.value() {
gimli::AttributeValue::Addr(val) => {
ranges.high_pc = Some(val)
}
gimli::AttributeValue::DebugAddrIndex(index) => {
ranges.high_pc = Some(sections.address(unit, index)?);
}
gimli::AttributeValue::Udata(val) => {
ranges.size = Some(val)
}
_ => {}
},
gimli::DW_AT_ranges => {
ranges.ranges_offset =
sections.attr_ranges_offset(unit, attr.value())?;
}
_ => {}
};
}
Err(e) => return Err(e),
}
}
let function_index = functions.len();
if ranges.for_each_range(sections, unit, |range| {
addresses.push(FunctionAddress {
range,
function: function_index,
});
})? {
functions.push((dw_die_offset, LazyCell::new()));
}
} else {
entries.skip_attributes(abbrev.attributes())?;
}
}
}
// The binary search requires the addresses to be sorted.
//
// It also requires them to be non-overlapping. In practice, overlapping
// function ranges are unlikely, so we don't try to handle that yet.
//
// It's possible for multiple functions to have the same address range if the
// compiler can detect and remove functions with identical code. In that case
// we'll nondeterministically return one of them.
addresses.sort_by_key(|x| x.range.begin);
Ok(Functions {
functions: functions.into_boxed_slice(),
addresses: addresses.into_boxed_slice(),
})
}
pub(crate) fn find_address(&self, probe: u64) -> Option<usize> {
self.addresses
.binary_search_by(|address| {
if probe < address.range.begin {
Ordering::Greater
} else if probe >= address.range.end {
Ordering::Less
} else {
Ordering::Equal
}
})
.ok()
}
pub(crate) fn parse_inlined_functions(
&self,
file: DebugFile,
unit: &gimli::Unit<R>,
ctx: &Context<R>,
sections: &gimli::Dwarf<R>,
) -> Result<(), Error> {
for function in &*self.functions {
function
.1
.borrow_with(|| Function::parse(function.0, file, unit, ctx, sections))
.as_ref()
.map_err(Error::clone)?;
}
Ok(())
}
}
impl<R: gimli::Reader> Function<R> {
pub(crate) fn parse(
dw_die_offset: gimli::UnitOffset<R::Offset>,
file: DebugFile,
unit: &gimli::Unit<R>,
ctx: &Context<R>,
sections: &gimli::Dwarf<R>,
) -> Result<Self, Error> {
let mut entries = unit.entries_raw(Some(dw_die_offset))?;
let depth = entries.next_depth();
let abbrev = entries.read_abbreviation()?.unwrap();
debug_assert_eq!(abbrev.tag(), gimli::DW_TAG_subprogram);
let mut name = None;
for spec in abbrev.attributes() {
match entries.read_attribute(*spec) {
Ok(ref attr) => {
match attr.name() {
gimli::DW_AT_linkage_name | gimli::DW_AT_MIPS_linkage_name => {
if let Ok(val) = sections.attr_string(unit, attr.value()) {
name = Some(val);
}
}
gimli::DW_AT_name => {
if name.is_none() {
name = sections.attr_string(unit, attr.value()).ok();
}
}
gimli::DW_AT_abstract_origin | gimli::DW_AT_specification => {
if name.is_none() {
name = name_attr(attr.value(), file, unit, ctx, sections, 16)?;
}
}
_ => {}
};
}
Err(e) => return Err(e),
}
}
let mut inlined_functions = Vec::new();
let mut inlined_addresses = Vec::new();
Function::parse_children(
&mut entries,
depth,
file,
unit,
ctx,
sections,
&mut inlined_functions,
&mut inlined_addresses,
0,
)?;
// Sort ranges in "breadth-first traversal order", i.e. first by call_depth
// and then by range.begin. This allows finding the range containing an
// address at a certain depth using binary search.
// Note: Using DFS order, i.e. ordering by range.begin first and then by
// call_depth, would not work! Consider the two examples
// "[0..10 at depth 0], [0..2 at depth 1], [6..8 at depth 1]" and
// "[0..5 at depth 0], [0..2 at depth 1], [5..10 at depth 0], [6..8 at depth 1]".
// In this example, if you want to look up address 7 at depth 0, and you
// encounter [0..2 at depth 1], are you before or after the target range?
// You don't know.
inlined_addresses.sort_by(|r1, r2| {
if r1.call_depth < r2.call_depth {
Ordering::Less
} else if r1.call_depth > r2.call_depth {
Ordering::Greater
} else if r1.range.begin < r2.range.begin {
Ordering::Less
} else if r1.range.begin > r2.range.begin {
Ordering::Greater
} else {
Ordering::Equal
}
});
Ok(Function {
dw_die_offset,
name,
inlined_functions: inlined_functions.into_boxed_slice(),
inlined_addresses: inlined_addresses.into_boxed_slice(),
})
}
fn parse_children(
entries: &mut gimli::EntriesRaw<'_, '_, R>,
depth: isize,
file: DebugFile,
unit: &gimli::Unit<R>,
ctx: &Context<R>,
sections: &gimli::Dwarf<R>,
inlined_functions: &mut Vec<InlinedFunction<R>>,
inlined_addresses: &mut Vec<InlinedFunctionAddress>,
inlined_depth: usize,
) -> Result<(), Error> {
loop {
let dw_die_offset = entries.next_offset();
let next_depth = entries.next_depth();
if next_depth <= depth {
return Ok(());
}
if let Some(abbrev) = entries.read_abbreviation()? {
match abbrev.tag() {
gimli::DW_TAG_subprogram => {
Function::skip(entries, abbrev, next_depth)?;
}
gimli::DW_TAG_inlined_subroutine => {
InlinedFunction::parse(
dw_die_offset,
entries,
abbrev,
next_depth,
file,
unit,
ctx,
sections,
inlined_functions,
inlined_addresses,
inlined_depth,
)?;
}
_ => {
entries.skip_attributes(abbrev.attributes())?;
}
}
}
}
}
fn skip(
entries: &mut gimli::EntriesRaw<'_, '_, R>,
abbrev: &gimli::Abbreviation,
depth: isize,
) -> Result<(), Error> {
// TODO: use DW_AT_sibling
entries.skip_attributes(abbrev.attributes())?;
while entries.next_depth() > depth {
if let Some(abbrev) = entries.read_abbreviation()? {
entries.skip_attributes(abbrev.attributes())?;
}
}
Ok(())
}
/// Build the list of inlined functions that contain `probe`.
pub(crate) fn find_inlined_functions(
&self,
probe: u64,
) -> iter::Rev<maybe_small::IntoIter<&InlinedFunction<R>>> {
// `inlined_functions` is ordered from outside to inside.
let mut inlined_functions = maybe_small::Vec::new();
let mut inlined_addresses = &self.inlined_addresses[..];
loop {
let current_depth = inlined_functions.len();
// Look up (probe, current_depth) in inline_ranges.
// `inlined_addresses` is sorted in "breadth-first traversal order", i.e.
// by `call_depth` first, and then by `range.begin`. See the comment at
// the sort call for more information about why.
let search = inlined_addresses.binary_search_by(|range| {
if range.call_depth > current_depth {
Ordering::Greater
} else if range.call_depth < current_depth {
Ordering::Less
} else if range.range.begin > probe {
Ordering::Greater
} else if range.range.end <= probe {
Ordering::Less
} else {
Ordering::Equal
}
});
if let Ok(index) = search {
let function_index = inlined_addresses[index].function;
inlined_functions.push(&self.inlined_functions[function_index]);
inlined_addresses = &inlined_addresses[index + 1..];
} else {
break;
}
}
inlined_functions.into_iter().rev()
}
}
impl<R: gimli::Reader> InlinedFunction<R> {
fn parse(
dw_die_offset: gimli::UnitOffset<R::Offset>,
entries: &mut gimli::EntriesRaw<'_, '_, R>,
abbrev: &gimli::Abbreviation,
depth: isize,
file: DebugFile,
unit: &gimli::Unit<R>,
ctx: &Context<R>,
sections: &gimli::Dwarf<R>,
inlined_functions: &mut Vec<InlinedFunction<R>>,
inlined_addresses: &mut Vec<InlinedFunctionAddress>,
inlined_depth: usize,
) -> Result<(), Error> {
let mut ranges = RangeAttributes::default();
let mut name = None;
let mut call_file = None;
let mut call_line = 0;
let mut call_column = 0;
for spec in abbrev.attributes() {
match entries.read_attribute(*spec) {
Ok(ref attr) => match attr.name() {
gimli::DW_AT_low_pc => match attr.value() {
gimli::AttributeValue::Addr(val) => ranges.low_pc = Some(val),
gimli::AttributeValue::DebugAddrIndex(index) => {
ranges.low_pc = Some(sections.address(unit, index)?);
}
_ => {}
},
gimli::DW_AT_high_pc => match attr.value() {
gimli::AttributeValue::Addr(val) => ranges.high_pc = Some(val),
gimli::AttributeValue::DebugAddrIndex(index) => {
ranges.high_pc = Some(sections.address(unit, index)?);
}
gimli::AttributeValue::Udata(val) => ranges.size = Some(val),
_ => {}
},
gimli::DW_AT_ranges => {
ranges.ranges_offset = sections.attr_ranges_offset(unit, attr.value())?;
}
gimli::DW_AT_linkage_name | gimli::DW_AT_MIPS_linkage_name => {
if let Ok(val) = sections.attr_string(unit, attr.value()) {
name = Some(val);
}
}
gimli::DW_AT_name => {
if name.is_none() {
name = sections.attr_string(unit, attr.value()).ok();
}
}
gimli::DW_AT_abstract_origin | gimli::DW_AT_specification => {
if name.is_none() {
name = name_attr(attr.value(), file, unit, ctx, sections, 16)?;
}
}
gimli::DW_AT_call_file => {
// There is a spec issue [1] with how DW_AT_call_file is specified in DWARF 5.
// Before, a file index of 0 would indicate no source file, however in
// DWARF 5 this could be a valid index into the file table.
//
// Implementations such as LLVM generates a file index of 0 when DWARF 5 is
// used.
//
// Thus, if we see a version of 5 or later, treat a file index of 0 as such.
// [1]: http://wiki.dwarfstd.org/index.php?title=DWARF5_Line_Table_File_Numbers
if let gimli::AttributeValue::FileIndex(fi) = attr.value() {
if fi > 0 || unit.header.version() >= 5 {
call_file = Some(fi);
}
}
}
gimli::DW_AT_call_line => {
call_line = attr.udata_value().unwrap_or(0) as u32;
}
gimli::DW_AT_call_column => {
call_column = attr.udata_value().unwrap_or(0) as u32;
}
_ => {}
},
Err(e) => return Err(e),
}
}
let function_index = inlined_functions.len();
inlined_functions.push(InlinedFunction {
dw_die_offset,
name,
call_file,
call_line,
call_column,
});
ranges.for_each_range(sections, unit, |range| {
inlined_addresses.push(InlinedFunctionAddress {
range,
call_depth: inlined_depth,
function: function_index,
});
})?;
Function::parse_children(
entries,
depth,
file,
unit,
ctx,
sections,
inlined_functions,
inlined_addresses,
inlined_depth + 1,
)
}
}
fn name_attr<R>(
attr: gimli::AttributeValue<R>,
mut file: DebugFile,
unit: &gimli::Unit<R>,
ctx: &Context<R>,
sections: &gimli::Dwarf<R>,
recursion_limit: usize,
) -> Result<Option<R>, Error>
where
R: gimli::Reader,
{
if recursion_limit == 0 {
return Ok(None);
}
match attr {
gimli::AttributeValue::UnitRef(offset) => {
name_entry(file, unit, offset, ctx, sections, recursion_limit)
}
gimli::AttributeValue::DebugInfoRef(dr) => {
let (unit, offset) = ctx.find_unit(dr, file)?;
name_entry(file, unit, offset, ctx, sections, recursion_limit)
}
gimli::AttributeValue::DebugInfoRefSup(dr) => {
if let Some(sup_sections) = sections.sup.as_ref() {
file = DebugFile::Supplementary;
let (unit, offset) = ctx.find_unit(dr, file)?;
name_entry(file, unit, offset, ctx, sup_sections, recursion_limit)
} else {
Ok(None)
}
}
_ => Ok(None),
}
}
fn name_entry<R>(
file: DebugFile,
unit: &gimli::Unit<R>,
offset: gimli::UnitOffset<R::Offset>,
ctx: &Context<R>,
sections: &gimli::Dwarf<R>,
recursion_limit: usize,
) -> Result<Option<R>, Error>
where
R: gimli::Reader,
{
let mut entries = unit.entries_raw(Some(offset))?;
let abbrev = if let Some(abbrev) = entries.read_abbreviation()? {
abbrev
} else {
return Err(gimli::Error::NoEntryAtGivenOffset);
};
let mut name = None;
let mut next = None;
for spec in abbrev.attributes() {
match entries.read_attribute(*spec) {
Ok(ref attr) => match attr.name() {
gimli::DW_AT_linkage_name | gimli::DW_AT_MIPS_linkage_name => {
if let Ok(val) = sections.attr_string(unit, attr.value()) {
return Ok(Some(val));
}
}
gimli::DW_AT_name => {
if let Ok(val) = sections.attr_string(unit, attr.value()) {
name = Some(val);
}
}
gimli::DW_AT_abstract_origin | gimli::DW_AT_specification => {
next = Some(attr.value());
}
_ => {}
},
Err(e) => return Err(e),
}
}
if name.is_some() {
return Ok(name);
}
if let Some(next) = next {
return name_attr(next, file, unit, ctx, sections, recursion_limit - 1);
}
Ok(None)
}

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vendor/addr2line/src/lazy.rs vendored Normal file
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use core::cell::UnsafeCell;
pub struct LazyCell<T> {
contents: UnsafeCell<Option<T>>,
}
impl<T> LazyCell<T> {
pub fn new() -> LazyCell<T> {
LazyCell {
contents: UnsafeCell::new(None),
}
}
pub fn borrow(&self) -> Option<&T> {
unsafe { &*self.contents.get() }.as_ref()
}
pub fn borrow_with(&self, closure: impl FnOnce() -> T) -> &T {
// First check if we're already initialized...
let ptr = self.contents.get();
if let Some(val) = unsafe { &*ptr } {
return val;
}
// Note that while we're executing `closure` our `borrow_with` may
// be called recursively. This means we need to check again after
// the closure has executed. For that we use the `get_or_insert`
// method which will only perform mutation if we aren't already
// `Some`.
let val = closure();
unsafe { (*ptr).get_or_insert(val) }
}
}

1729
vendor/addr2line/src/lib.rs vendored Normal file
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File diff suppressed because it is too large Load Diff

126
vendor/addr2line/tests/correctness.rs vendored Normal file
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use addr2line::Context;
use fallible_iterator::FallibleIterator;
use findshlibs::{IterationControl, SharedLibrary, TargetSharedLibrary};
use object::Object;
use std::borrow::Cow;
use std::fs::File;
use std::sync::Arc;
fn find_debuginfo() -> memmap2::Mmap {
let path = std::env::current_exe().unwrap();
let file = File::open(&path).unwrap();
let map = unsafe { memmap2::Mmap::map(&file).unwrap() };
let file = &object::File::parse(&*map).unwrap();
if let Ok(uuid) = file.mach_uuid() {
for candidate in path.parent().unwrap().read_dir().unwrap() {
let path = candidate.unwrap().path();
if !path.to_str().unwrap().ends_with(".dSYM") {
continue;
}
for candidate in path.join("Contents/Resources/DWARF").read_dir().unwrap() {
let path = candidate.unwrap().path();
let file = File::open(&path).unwrap();
let map = unsafe { memmap2::Mmap::map(&file).unwrap() };
let file = &object::File::parse(&*map).unwrap();
if file.mach_uuid().unwrap() == uuid {
return map;
}
}
}
}
return map;
}
#[test]
fn correctness() {
let map = find_debuginfo();
let file = &object::File::parse(&*map).unwrap();
let module_base = file.relative_address_base();
let endian = if file.is_little_endian() {
gimli::RunTimeEndian::Little
} else {
gimli::RunTimeEndian::Big
};
fn load_section<'data: 'file, 'file, O, Endian>(
id: gimli::SectionId,
file: &'file O,
endian: Endian,
) -> Result<gimli::EndianArcSlice<Endian>, gimli::Error>
where
O: object::Object<'data, 'file>,
Endian: gimli::Endianity,
{
use object::ObjectSection;
let data = file
.section_by_name(id.name())
.and_then(|section| section.uncompressed_data().ok())
.unwrap_or(Cow::Borrowed(&[]));
Ok(gimli::EndianArcSlice::new(Arc::from(&*data), endian))
}
let dwarf = gimli::Dwarf::load(|id| load_section(id, file, endian)).unwrap();
let ctx = Context::from_dwarf(dwarf).unwrap();
let mut split_dwarf_loader = addr2line::builtin_split_dwarf_loader::SplitDwarfLoader::new(
|data, endian| gimli::EndianArcSlice::new(Arc::from(&*data), endian),
None,
);
let mut bias = None;
TargetSharedLibrary::each(|lib| {
bias = Some((lib.virtual_memory_bias().0 as u64).wrapping_sub(module_base));
IterationControl::Break
});
#[allow(unused_mut)]
let mut test = |sym: u64, expected_prefix: &str| {
let ip = sym.wrapping_sub(bias.unwrap());
let frames = ctx.find_frames(ip);
let frames = split_dwarf_loader.run(frames).unwrap();
let frame = frames.last().unwrap().unwrap();
let name = frame.function.as_ref().unwrap().demangle().unwrap();
// Old rust versions generate DWARF with wrong linkage name,
// so only check the start.
if !name.starts_with(expected_prefix) {
panic!("incorrect name '{}', expected {:?}", name, expected_prefix);
}
};
test(test_function as u64, "correctness::test_function");
test(
small::test_function as u64,
"correctness::small::test_function",
);
test(auxiliary::foo as u64, "auxiliary::foo");
}
mod small {
pub fn test_function() {
println!("y");
}
}
fn test_function() {
println!("x");
}
#[test]
fn zero_function() {
let map = find_debuginfo();
let file = &object::File::parse(&*map).unwrap();
let ctx = Context::new(file).unwrap();
for probe in 0..10 {
assert!(
ctx.find_frames(probe)
.skip_all_loads()
.unwrap()
.count()
.unwrap()
< 10
);
}
}

135
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use std::env;
use std::ffi::OsStr;
use std::path::Path;
use std::process::Command;
use backtrace::Backtrace;
use findshlibs::{IterationControl, SharedLibrary, TargetSharedLibrary};
use libtest_mimic::{Arguments, Failed, Trial};
#[inline(never)]
fn make_trace() -> Vec<String> {
fn foo() -> Backtrace {
bar()
}
#[inline(never)]
fn bar() -> Backtrace {
baz()
}
#[inline(always)]
fn baz() -> Backtrace {
Backtrace::new_unresolved()
}
let mut base_addr = None;
TargetSharedLibrary::each(|lib| {
base_addr = Some(lib.virtual_memory_bias().0 as isize);
IterationControl::Break
});
let addrfix = -base_addr.unwrap();
let trace = foo();
trace
.frames()
.iter()
.take(5)
.map(|x| format!("{:p}", (x.ip() as *const u8).wrapping_offset(addrfix)))
.collect()
}
fn run_cmd<P: AsRef<OsStr>>(exe: P, me: &Path, flags: Option<&str>, trace: &str) -> String {
let mut cmd = Command::new(exe);
cmd.env("LC_ALL", "C"); // GNU addr2line is localized, we aren't
cmd.env("RUST_BACKTRACE", "1"); // if a child crashes, we want to know why
if let Some(flags) = flags {
cmd.arg(flags);
}
cmd.arg("--exe").arg(me).arg(trace);
let output = cmd.output().unwrap();
assert!(output.status.success());
String::from_utf8(output.stdout).unwrap()
}
fn run_test(flags: Option<&str>) -> Result<(), Failed> {
let me = env::current_exe().unwrap();
let mut exe = me.clone();
assert!(exe.pop());
if exe.file_name().unwrap().to_str().unwrap() == "deps" {
assert!(exe.pop());
}
exe.push("examples");
exe.push("addr2line");
assert!(exe.is_file());
let trace = make_trace();
// HACK: GNU addr2line has a bug where looking up multiple addresses can cause the second
// lookup to fail. Workaround by doing one address at a time.
for addr in &trace {
let theirs = run_cmd("addr2line", &me, flags, addr);
let ours = run_cmd(&exe, &me, flags, addr);
// HACK: GNU addr2line does not tidy up paths properly, causing double slashes to be printed.
// We consider our behavior to be correct, so we fix their output to match ours.
let theirs = theirs.replace("//", "/");
assert!(
theirs == ours,
"Output not equivalent:
$ addr2line {0} --exe {1} {2}
{4}
$ {3} {0} --exe {1} {2}
{5}
",
flags.unwrap_or(""),
me.display(),
trace.join(" "),
exe.display(),
theirs,
ours
);
}
Ok(())
}
static FLAGS: &str = "aipsf";
fn make_tests() -> Vec<Trial> {
(0..(1 << FLAGS.len()))
.map(|bits| {
if bits == 0 {
None
} else {
let mut param = String::new();
param.push('-');
for (i, flag) in FLAGS.chars().enumerate() {
if (bits & (1 << i)) != 0 {
param.push(flag);
}
}
Some(param)
}
})
.map(|param| {
Trial::test(
format!("addr2line {}", param.as_ref().map_or("", String::as_str)),
move || run_test(param.as_ref().map(String::as_str)),
)
})
.collect()
}
fn main() {
if !cfg!(target_os = "linux") {
return;
}
let args = Arguments::from_args();
libtest_mimic::run(&args, make_tests()).exit();
}

114
vendor/addr2line/tests/parse.rs vendored Normal file
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@ -0,0 +1,114 @@
use std::borrow::Cow;
use std::env;
use std::fs::File;
use std::path::{self, PathBuf};
use object::Object;
fn release_fixture_path() -> PathBuf {
if let Ok(p) = env::var("ADDR2LINE_FIXTURE_PATH") {
return p.into();
}
let mut path = PathBuf::new();
if let Ok(dir) = env::var("CARGO_MANIFEST_DIR") {
path.push(dir);
}
path.push("fixtures");
path.push("addr2line-release");
path
}
fn with_file<F: FnOnce(&object::File<'_>)>(target: &path::Path, f: F) {
let file = File::open(target).unwrap();
let map = unsafe { memmap2::Mmap::map(&file).unwrap() };
let file = object::File::parse(&*map).unwrap();
f(&file)
}
fn dwarf_load<'a>(object: &object::File<'a>) -> gimli::Dwarf<Cow<'a, [u8]>> {
let load_section = |id: gimli::SectionId| -> Result<Cow<'a, [u8]>, gimli::Error> {
use object::ObjectSection;
let data = object
.section_by_name(id.name())
.and_then(|section| section.data().ok())
.unwrap_or(&[][..]);
Ok(Cow::Borrowed(data))
};
gimli::Dwarf::load(&load_section).unwrap()
}
fn dwarf_borrow<'a>(
dwarf: &'a gimli::Dwarf<Cow<'_, [u8]>>,
) -> gimli::Dwarf<gimli::EndianSlice<'a, gimli::LittleEndian>> {
let borrow_section: &dyn for<'b> Fn(
&'b Cow<'_, [u8]>,
) -> gimli::EndianSlice<'b, gimli::LittleEndian> =
&|section| gimli::EndianSlice::new(section, gimli::LittleEndian);
dwarf.borrow(&borrow_section)
}
#[test]
fn parse_base_rc() {
let target = release_fixture_path();
with_file(&target, |file| {
addr2line::ObjectContext::new(file).unwrap();
});
}
#[test]
fn parse_base_slice() {
let target = release_fixture_path();
with_file(&target, |file| {
let dwarf = dwarf_load(file);
let dwarf = dwarf_borrow(&dwarf);
addr2line::Context::from_dwarf(dwarf).unwrap();
});
}
#[test]
fn parse_lines_rc() {
let target = release_fixture_path();
with_file(&target, |file| {
let context = addr2line::ObjectContext::new(file).unwrap();
context.parse_lines().unwrap();
});
}
#[test]
fn parse_lines_slice() {
let target = release_fixture_path();
with_file(&target, |file| {
let dwarf = dwarf_load(file);
let dwarf = dwarf_borrow(&dwarf);
let context = addr2line::Context::from_dwarf(dwarf).unwrap();
context.parse_lines().unwrap();
});
}
#[test]
fn parse_functions_rc() {
let target = release_fixture_path();
with_file(&target, |file| {
let context = addr2line::ObjectContext::new(file).unwrap();
context.parse_functions().unwrap();
});
}
#[test]
fn parse_functions_slice() {
let target = release_fixture_path();
with_file(&target, |file| {
let dwarf = dwarf_load(file);
let dwarf = dwarf_borrow(&dwarf);
let context = addr2line::Context::from_dwarf(dwarf).unwrap();
context.parse_functions().unwrap();
});
}