From 3ab6d08c7f7260e32ab27cd9557a9dcd740d0874 Mon Sep 17 00:00:00 2001
From: Gwilym Inzani <email@gwilym.dev>
Date: Mon, 1 Apr 2024 13:26:48 +0100
Subject: [PATCH] Start to implement an agb-addr2line

---
 agb-addr2line/Cargo.toml  | 22 ++++++++++++++++++++
 agb-addr2line/src/main.rs | 43 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 65 insertions(+)
 create mode 100644 agb-addr2line/Cargo.toml
 create mode 100644 agb-addr2line/src/main.rs

diff --git a/agb-addr2line/Cargo.toml b/agb-addr2line/Cargo.toml
new file mode 100644
index 00000000..82cfffa7
--- /dev/null
+++ b/agb-addr2line/Cargo.toml
@@ -0,0 +1,22 @@
+[package]
+name = "agb-addr2line"
+version = "0.19.1"
+edition = "2021"
+authors = ["Gwilym Inzani <email@gwilym.dev>"]
+license = "MPL-2.0"
+description = "CLI utility to convert agb stack trace dumps into human readable stack traces"
+repository = "https://github.com/agbrs/agb"
+
+[dependencies]
+anyhow = "1"
+clap = { version = "4", features = ["derive"] }
+addr2line = "0.21"
+
+[profile.dev]
+opt-level = 3
+debug = true
+
+[profile.release]
+opt-level = 3
+lto = "fat"
+debug = true
diff --git a/agb-addr2line/src/main.rs b/agb-addr2line/src/main.rs
new file mode 100644
index 00000000..4c5641a8
--- /dev/null
+++ b/agb-addr2line/src/main.rs
@@ -0,0 +1,43 @@
+use std::{fs, path::PathBuf, str::FromStr};
+
+use addr2line::object;
+use clap::Parser;
+
+#[derive(Parser, Debug)]
+#[command(version, about, long_about = None)]
+struct Args {
+    /// The filename of the elf file
+    elf_path: PathBuf,
+
+    /// The output of agb's dump
+    dump: String,
+}
+
+fn main() -> anyhow::Result<()> {
+    let cli = Args::parse();
+
+    let file = fs::read(cli.elf_path)?;
+    let object = object::File::parse(file.as_slice())?;
+
+    let ctx = addr2line::Context::new(&object)?;
+
+    if let Some(location) = ctx.find_location(parse_address(&cli.dump)?)? {
+        let file = location.file.unwrap_or("unknown file");
+        let line = location
+            .line
+            .map(|line| line.to_string())
+            .unwrap_or_else(|| "??".to_owned());
+
+        println!("{file}:{line}");
+    }
+
+    Ok(())
+}
+
+fn parse_address(input: &str) -> Result<u64, <u64 as FromStr>::Err> {
+    if let Some(input) = input.strip_prefix("0x") {
+        u64::from_str_radix(input, 16)
+    } else {
+        input.parse()
+    }
+}