Add dark/light theme toggle (light theme WIP)

* Rewrite Affix::find to be much simpler

* Rename Affix::find parameters to not be string

* Remove unused `LevMatchingBlock` struct

* Make `Affix` type simpler

.github/workflows/build.yaml

@@ -20,7 +20,9 @@ jobs:
       RUSTFLAGS: -D warnings
     steps:
       - name: Install dependencies
-        run: sudo apt-get -y install libgtk-3-dev
+        run: |
+          sudo apt-get update
+          sudo apt-get -y install libgtk-3-dev
       - name: Checkout
         uses: actions/checkout@v3
       - name: Setup Rust toolchain
@@ -58,7 +60,9 @@ jobs:
     steps:
       - name: Install dependencies
         if: matrix.platform == 'ubuntu-latest'
-        run: sudo apt-get -y install libgtk-3-dev
+        run: |
+          sudo apt-get update
+          sudo apt-get -y install libgtk-3-dev
       - name: Checkout
         uses: actions/checkout@v3
       - name: Setup Rust toolchain
@@ -89,7 +93,9 @@ jobs:
     steps:
       - name: Install dependencies
         if: matrix.packages != ''
-        run: sudo apt-get -y install ${{ matrix.packages }}
+        run: |
+          sudo apt-get update
+          sudo apt-get -y install ${{ matrix.packages }}
       - name: Checkout
         uses: actions/checkout@v3
       - name: Setup Rust toolchain

Cargo.toml

@@ -1,8 +1,8 @@
 [package]
 name = "objdiff"
-version = "0.2.0"
+version = "0.3.4"
 edition = "2021"
-rust-version = "1.62"
+rust-version = "1.65"
 authors = ["Luke Street <luke@street.dev>"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/encounter/objdiff"
@@ -11,40 +11,59 @@ description = """
 A local diffing tool for decompilation projects.
 """
 publish = false
+build = "build.rs"
 
 [profile.release]
 lto = "thin"
 strip = "debuginfo"
 
+[features]
+default = []
+wgpu = ["eframe/wgpu"]
+
 [dependencies]
-anyhow = "1.0.66"
+anyhow = "1.0.71"
+bytes = "1.4.0"
 cfg-if = "1.0.0"
-const_format = "0.2.30"
-cwdemangle = { git = "https://github.com/encounter/cwdemangle", rev = "286f3d1d29ee2457db89043782725631845c3e4c" }
-eframe = { version = "0.19.0", features = ["persistence"] } # , "wgpu"
-egui = "0.19.0"
-egui_extras = "0.19.0"
+const_format = "0.2.31"
+cwdemangle = "0.1.5"
+eframe = { version = "0.22.0", features = ["persistence"] }
+egui = "0.22.0"
+egui_extras = "0.22.0"
 flagset = "0.4.3"
-log = "0.4.17"
-memmap2 = "0.5.8"
-notify = "5.0.0"
-object = { version = "0.30.0", features = ["read_core", "std", "elf"], default-features = false }
-ppc750cl = { git = "https://github.com/encounter/ppc750cl", rev = "aa631a33de7882c679afca89350898b87cb3ba3f" }
-rabbitizer = { git = "https://github.com/encounter/rabbitizer-rs", rev = "10c279b2ef251c62885b1dcdcfe740b0db8e9956" }
-rfd = { version = "0.10.0" } # , default-features = false, features = ['xdg-portal']
-self_update = "0.32.0"
+log = "0.4.19"
+memmap2 = "0.7.1"
+notify = "6.0.1"
+object = { version = "0.31.1", features = ["read_core", "std", "elf"], default-features = false }
+png = "0.17.9"
+ppc750cl = { git = "https://github.com/terorie/ppc750cl", rev = "9ae36eef34aa6d74e00972c7671f547a2acfd0aa" }
+rabbitizer = "1.7.4"
+rfd = { version = "0.11.4" } #, default-features = false, features = ['xdg-portal']
 serde = { version = "1", features = ["derive"] }
-thiserror = "1.0.37"
-time = { version = "0.3.17", features = ["formatting", "local-offset"] }
-toml = "0.5.9"
+tempfile = "3.6.0"
+thiserror = "1.0.41"
+time = { version = "0.3.22", features = ["formatting", "local-offset"] }
+toml = "0.7.6"
 twox-hash = "1.6.3"
-tempfile = "3.3.0"
-reqwest = "0.11.13"
+byteorder = "1.4.3"
+
+# For Linux static binaries, use rustls
+[target.'cfg(target_os = "linux")'.dependencies]
+reqwest = { version = "0.11.18", default-features = false, features = ["blocking", "json", "rustls"] }
+self_update = { version = "0.37.0", default-features = false, features = ["rustls"] }
+
+# For all other platforms, use native TLS
+[target.'cfg(not(target_os = "linux"))'.dependencies]
+reqwest = "0.11.18"
+self_update = "0.37.0"
 
 [target.'cfg(windows)'.dependencies]
 path-slash = "0.2.1"
 winapi = "0.3.9"
 
+[target.'cfg(windows)'.build-dependencies]
+winres = "0.1.12"
+
 [target.'cfg(unix)'.dependencies]
 exec = "0.3.1"
 
@@ -58,5 +77,5 @@ console_error_panic_hook = "0.1.7"
 tracing-wasm = "0.2"
 
 [build-dependencies]
-anyhow = "1.0.66"
-vergen = { version = "7.4.3", features = ["build", "cargo", "git"], default-features = false }
+anyhow = "1.0.71"
+vergen = { version = "8.2.4", features = ["build", "cargo", "git", "gitcl"] }

build.rs

@@ -1,4 +1,10 @@
 use anyhow::Result;
-use vergen::{vergen, Config};
+use vergen::EmitBuilder;
 
-fn main() -> Result<()> { vergen(Config::default()) }
+fn main() -> Result<()> {
+    #[cfg(windows)]
+    {
+        winres::WindowsResource::new().set_icon("assets/icon.ico").compile()?;
+    }
+    EmitBuilder::builder().fail_on_error().all_build().all_cargo().all_git().emit()
+}

deny.toml

@@ -48,7 +48,11 @@ notice = "warn"
 # A list of advisory IDs to ignore. Note that ignored advisories will still
 # output a note when they are encountered.
 ignore = [
-    #"RUSTSEC-0000-0000",
+    "RUSTSEC-2023-0022",
+    "RUSTSEC-2023-0023",
+    "RUSTSEC-2023-0024",
+    "RUSTSEC-2023-0034",
+    "RUSTSEC-2023-0044",
 ]
 # Threshold for security vulnerabilities, any vulnerability with a CVSS score
 # lower than the range specified will be ignored. Note that ignored advisories
@@ -81,6 +85,10 @@ allow = [
     "Unicode-DFS-2016",
     "Zlib",
     "0BSD",
+    "OFL-1.1",
+    "LicenseRef-UFL-1.0",
+    "OpenSSL",
+    "GPL-3.0",
 ]
 # List of explictly disallowed licenses
 # See https://spdx.org/licenses/ for list of possible licenses
@@ -118,22 +126,22 @@ exceptions = [
 # Some crates don't have (easily) machine readable licensing information,
 # adding a clarification entry for it allows you to manually specify the
 # licensing information
-#[[licenses.clarify]]
+[[licenses.clarify]]
 # The name of the crate the clarification applies to
-#name = "ring"
+name = "ring"
 # The optional version constraint for the crate
-#version = "*"
+version = "*"
 # The SPDX expression for the license requirements of the crate
-#expression = "MIT AND ISC AND OpenSSL"
+expression = "MIT AND ISC AND OpenSSL"
 # One or more files in the crate's source used as the "source of truth" for
 # the license expression. If the contents match, the clarification will be used
 # when running the license check, otherwise the clarification will be ignored
 # and the crate will be checked normally, which may produce warnings or errors
 # depending on the rest of your configuration
-#license-files = [
+license-files = [
     # Each entry is a crate relative path, and the (opaque) hash of its contents
-    #{ path = "LICENSE", hash = 0xbd0eed23 }
-#]
+    { path = "LICENSE", hash = 0xbd0eed23 }
+]
 
 [licenses.private]
 # If true, ignores workspace crates that aren't published, or are only

src/app.rs

@@ -58,7 +58,7 @@ const DEFAULT_COLOR_ROTATION: [Color32; 9] = [
     Color32::from_rgb(255, 192, 203),
     Color32::from_rgb(0, 0, 255),
     Color32::from_rgb(0, 255, 0),
-    Color32::from_rgb(128, 128, 128),
+    Color32::from_rgb(213, 138, 138),
 ];
 
 #[derive(serde::Deserialize, serde::Serialize)]
@@ -67,18 +67,48 @@ pub struct ViewConfig {
     pub ui_font: FontId,
     pub code_font: FontId,
     pub diff_colors: Vec<Color32>,
+    pub reverse_fn_order: bool,
+    pub theme: eframe::Theme,
+    #[serde(skip)]
+    pub text_color: Color32, // GRAY
+    #[serde(skip)]
+    pub emphasized_text_color: Color32, // LIGHT_GRAY
+    #[serde(skip)]
+    pub deemphasized_text_color: Color32, // DARK_GRAY
+    #[serde(skip)]
+    pub highlight_color: Color32, // WHITE
+    #[serde(skip)]
+    pub replace_color: Color32, // LIGHT_BLUE
+    #[serde(skip)]
+    pub insert_color: Color32, // GREEN
+    #[serde(skip)]
+    pub delete_color: Color32, // RED
 }
 
 impl Default for ViewConfig {
     fn default() -> Self {
         Self {
-            ui_font: FontId { size: 14.0, family: FontFamily::Proportional },
+            ui_font: FontId { size: 12.0, family: FontFamily::Proportional },
             code_font: FontId { size: 14.0, family: FontFamily::Monospace },
             diff_colors: DEFAULT_COLOR_ROTATION.to_vec(),
+            reverse_fn_order: false,
+            theme: eframe::Theme::Dark,
+            text_color: Color32::GRAY,
+            emphasized_text_color: Color32::LIGHT_GRAY,
+            deemphasized_text_color: Color32::DARK_GRAY,
+            highlight_color: Color32::WHITE,
+            replace_color: Color32::LIGHT_BLUE,
+            insert_color: Color32::GREEN,
+            delete_color: Color32::from_rgb(200, 40, 41),
         }
     }
 }
 
+pub struct SymbolReference {
+    pub symbol_name: String,
+    pub section_name: String,
+}
+
 #[derive(serde::Deserialize, serde::Serialize)]
 #[serde(default)]
 pub struct ViewState {
@@ -89,7 +119,7 @@ pub struct ViewState {
     #[serde(skip)]
     pub highlighted_symbol: Option<String>,
     #[serde(skip)]
-    pub selected_symbol: Option<String>,
+    pub selected_symbol: Option<SymbolReference>,
     #[serde(skip)]
     pub current_view: View,
     #[serde(skip)]
@@ -108,7 +138,6 @@ pub struct ViewState {
     pub check_update: Option<Box<CheckUpdateResult>>,
     // Config
     pub diff_kind: DiffKind,
-    pub reverse_fn_order: bool,
     pub view_config: ViewConfig,
 }
 
@@ -128,7 +157,6 @@ impl Default for ViewState {
             utc_offset: UtcOffset::UTC,
             check_update: None,
             diff_kind: Default::default(),
-            reverse_fn_order: false,
             view_config: Default::default(),
         }
     }
@@ -244,7 +272,7 @@ impl eframe::App for App {
         let Self { config, view_state, .. } = self;
 
         {
-            let config = &view_state.view_config;
+            let config = &mut view_state.view_config;
             let mut style = (*ctx.style()).clone();
             style.text_styles.insert(TextStyle::Body, FontId {
                 size: (config.ui_font.size * 0.75).floor(),
@@ -257,6 +285,28 @@ impl eframe::App for App {
                 family: config.ui_font.family.clone(),
             });
             style.text_styles.insert(TextStyle::Monospace, config.code_font.clone());
+            match config.theme {
+                eframe::Theme::Dark => {
+                    style.visuals = egui::Visuals::dark();
+                    config.text_color = Color32::GRAY;
+                    config.emphasized_text_color = Color32::LIGHT_GRAY;
+                    config.deemphasized_text_color = Color32::DARK_GRAY;
+                    config.highlight_color = Color32::WHITE;
+                    config.replace_color = Color32::LIGHT_BLUE;
+                    config.insert_color = Color32::GREEN;
+                    config.delete_color = Color32::from_rgb(200, 40, 41);
+                }
+                eframe::Theme::Light => {
+                    style.visuals = egui::Visuals::light();
+                    config.text_color = Color32::GRAY;
+                    config.emphasized_text_color = Color32::DARK_GRAY;
+                    config.deemphasized_text_color = Color32::LIGHT_GRAY;
+                    config.highlight_color = Color32::BLACK;
+                    config.replace_color = Color32::DARK_BLUE;
+                    config.insert_color = Color32::DARK_GREEN;
+                    config.delete_color = Color32::from_rgb(200, 40, 41);
+                }
+            }
             ctx.set_style(style);
         }
 
@@ -318,6 +368,20 @@ impl eframe::App for App {
         }
 
         egui::Window::new("Config").open(&mut view_state.show_config).show(ctx, |ui| {
+            egui::ComboBox::from_label("Theme")
+                .selected_text(format!("{:?}", view_state.view_config.theme))
+                .show_ui(ui, |ui| {
+                    ui.selectable_value(
+                        &mut view_state.view_config.theme,
+                        eframe::Theme::Dark,
+                        "Dark",
+                    );
+                    ui.selectable_value(
+                        &mut view_state.view_config.theme,
+                        eframe::Theme::Light,
+                        "Light",
+                    );
+                });
             ui.label("UI font:");
             egui::introspection::font_id_ui(ui, &mut view_state.view_config.ui_font);
             ui.separator();
@@ -354,15 +418,15 @@ impl eframe::App for App {
             {
                 ui.scope(|ui| {
                     ui.style_mut().override_text_style = Some(TextStyle::Monospace);
-                    ui.colored_label(Color32::LIGHT_BLUE, &demangled);
+                    ui.colored_label(view_state.view_config.replace_color, &demangled);
                 });
                 if ui.button("Copy").clicked() {
-                    ui.output().copied_text = demangled;
+                    ui.output_mut(|output| output.copied_text = demangled);
                 }
             } else {
                 ui.scope(|ui| {
                     ui.style_mut().override_text_style = Some(TextStyle::Monospace);
-                    ui.colored_label(Color32::LIGHT_RED, "[invalid]");
+                    ui.colored_label(view_state.view_config.replace_color, "[invalid]");
                 });
             }
         });
@@ -393,69 +457,64 @@ impl eframe::App for App {
 
     fn post_rendering(&mut self, _window_size_px: [u32; 2], _frame: &eframe::Frame) {
         for job in &mut self.view_state.jobs {
-            if let Some(handle) = &job.handle {
-                if !handle.is_finished() {
-                    continue;
-                }
-                match job.handle.take().unwrap().join() {
-                    Ok(result) => {
-                        log::info!("Job {} finished", job.id);
-                        match result {
-                            JobResult::None => {
-                                if let Some(err) = &job.status.read().unwrap().error {
-                                    log::error!("{:?}", err);
-                                }
-                            }
-                            JobResult::ObjDiff(state) => {
-                                self.view_state.build = Some(state);
-                            }
-                            JobResult::BinDiff(state) => {
-                                self.view_state.build = Some(Box::new(ObjDiffResult {
-                                    first_status: BuildStatus {
-                                        success: true,
-                                        log: "".to_string(),
-                                    },
-                                    second_status: BuildStatus {
-                                        success: true,
-                                        log: "".to_string(),
-                                    },
-                                    first_obj: Some(state.first_obj),
-                                    second_obj: Some(state.second_obj),
-                                    time: OffsetDateTime::now_utc(),
-                                }));
-                            }
-                            JobResult::CheckUpdate(state) => {
-                                self.view_state.check_update = Some(state);
-                            }
-                            JobResult::Update(state) => {
-                                if let Ok(mut guard) = self.relaunch_path.lock() {
-                                    *guard = Some(state.exe_path);
-                                }
-                                self.should_relaunch = true;
+            let Some(handle) = &job.handle else {
+                continue;
+            };
+            if !handle.is_finished() {
+                continue;
+            }
+            match job.handle.take().unwrap().join() {
+                Ok(result) => {
+                    log::info!("Job {} finished", job.id);
+                    match result {
+                        JobResult::None => {
+                            if let Some(err) = &job.status.read().unwrap().error {
+                                log::error!("{:?}", err);
                             }
                         }
-                    }
-                    Err(err) => {
-                        let err = if let Some(msg) = err.downcast_ref::<&'static str>() {
-                            anyhow::Error::msg(*msg)
-                        } else if let Some(msg) = err.downcast_ref::<String>() {
-                            anyhow::Error::msg(msg.clone())
-                        } else {
-                            anyhow::Error::msg("Thread panicked")
-                        };
-                        let result = job.status.write();
-                        if let Ok(mut guard) = result {
-                            guard.error = Some(err);
-                        } else {
-                            drop(result);
-                            job.status = Arc::new(RwLock::new(JobStatus {
-                                title: "Error".to_string(),
-                                progress_percent: 0.0,
-                                progress_items: None,
-                                status: "".to_string(),
-                                error: Some(err),
+                        JobResult::ObjDiff(state) => {
+                            self.view_state.build = Some(state);
+                        }
+                        JobResult::BinDiff(state) => {
+                            self.view_state.build = Some(Box::new(ObjDiffResult {
+                                first_status: BuildStatus { success: true, log: "".to_string() },
+                                second_status: BuildStatus { success: true, log: "".to_string() },
+                                first_obj: Some(state.first_obj),
+                                second_obj: Some(state.second_obj),
+                                time: OffsetDateTime::now_utc(),
                             }));
                         }
+                        JobResult::CheckUpdate(state) => {
+                            self.view_state.check_update = Some(state);
+                        }
+                        JobResult::Update(state) => {
+                            if let Ok(mut guard) = self.relaunch_path.lock() {
+                                *guard = Some(state.exe_path);
+                            }
+                            self.should_relaunch = true;
+                        }
+                    }
+                }
+                Err(err) => {
+                    let err = if let Some(msg) = err.downcast_ref::<&'static str>() {
+                        anyhow::Error::msg(*msg)
+                    } else if let Some(msg) = err.downcast_ref::<String>() {
+                        anyhow::Error::msg(msg.clone())
+                    } else {
+                        anyhow::Error::msg("Thread panicked")
+                    };
+                    let result = job.status.write();
+                    if let Ok(mut guard) = result {
+                        guard.error = Some(err);
+                    } else {
+                        drop(result);
+                        job.status = Arc::new(RwLock::new(JobStatus {
+                            title: "Error".to_string(),
+                            progress_percent: 0.0,
+                            progress_items: None,
+                            status: "".to_string(),
+                            error: Some(err),
+                        }));
                     }
                 }
             }
@@ -481,7 +540,7 @@ impl eframe::App for App {
                 if let Some(project_dir) = &config.project_dir {
                     match create_watcher(self.modified.clone(), project_dir) {
                         Ok(watcher) => self.watcher = Some(watcher),
-                        Err(e) => eprintln!("Failed to create watcher: {e}"),
+                        Err(e) => log::error!("Failed to create watcher: {e}"),
                     }
                     config.project_dir_change = false;
                     self.modified.store(true, Ordering::Relaxed);
@@ -532,7 +591,7 @@ fn create_watcher(
                     }
                 }
             }
-            Err(e) => println!("watch error: {e:?}"),
+            Err(e) => log::error!("watch error: {e:?}"),
         })?;
     watcher.watch(project_dir, RecursiveMode::Recursive)?;
     Ok(watcher)

src/diff.rs

@@ -17,14 +17,19 @@ fn no_diff_code(
     data: &[u8],
     symbol: &mut ObjSymbol,
     relocs: &[ObjReloc],
+    line_info: &Option<BTreeMap<u32, u32>>,
 ) -> Result<()> {
     let code =
         &data[symbol.section_address as usize..(symbol.section_address + symbol.size) as usize];
     let (_, ins) = match arch {
-        ObjArchitecture::PowerPc => ppc::process_code(code, symbol.address, relocs)?,
-        ObjArchitecture::Mips => {
-            mips::process_code(code, symbol.address, symbol.address + symbol.size, relocs)?
-        }
+        ObjArchitecture::PowerPc => ppc::process_code(code, symbol.address, relocs, line_info)?,
+        ObjArchitecture::Mips => mips::process_code(
+            code,
+            symbol.address,
+            symbol.address + symbol.size,
+            relocs,
+            line_info,
+        )?,
     };
 
     let mut diff = Vec::<ObjInsDiff>::new();
@@ -36,6 +41,7 @@ fn no_diff_code(
     Ok(())
 }
 
+#[allow(clippy::too_many_arguments)]
 pub fn diff_code(
     arch: ObjArchitecture,
     left_data: &[u8],
@@ -44,6 +50,8 @@ pub fn diff_code(
     right_symbol: &mut ObjSymbol,
     left_relocs: &[ObjReloc],
     right_relocs: &[ObjReloc],
+    left_line_info: &Option<BTreeMap<u32, u32>>,
+    right_line_info: &Option<BTreeMap<u32, u32>>,
 ) -> Result<()> {
     let left_code = &left_data[left_symbol.section_address as usize
         ..(left_symbol.section_address + left_symbol.size) as usize];
@@ -51,8 +59,8 @@ pub fn diff_code(
         ..(right_symbol.section_address + right_symbol.size) as usize];
     let ((left_ops, left_insts), (right_ops, right_insts)) = match arch {
         ObjArchitecture::PowerPc => (
-            ppc::process_code(left_code, left_symbol.address, left_relocs)?,
-            ppc::process_code(right_code, right_symbol.address, right_relocs)?,
+            ppc::process_code(left_code, left_symbol.address, left_relocs, left_line_info)?,
+            ppc::process_code(right_code, right_symbol.address, right_relocs, right_line_info)?,
         ),
         ObjArchitecture::Mips => (
             mips::process_code(
@@ -60,12 +68,14 @@ pub fn diff_code(
                 left_symbol.address,
                 left_symbol.address + left_symbol.size,
                 left_relocs,
+                left_line_info,
             )?,
             mips::process_code(
                 right_code,
                 right_symbol.address,
                 left_symbol.address + left_symbol.size,
                 right_relocs,
+                right_line_info,
             )?,
         ),
     };
@@ -123,7 +133,6 @@ pub fn diff_code(
                         right_diff.push(ObjInsDiff::default());
                         cur_left = left_iter.next();
                     }
-                    LevEditType::Keep => unreachable!(),
                 }
             } else {
                 break;
@@ -211,25 +220,25 @@ fn address_eq(left: &ObjSymbol, right: &ObjSymbol) -> bool {
 }
 
 fn reloc_eq(left_reloc: Option<&ObjReloc>, right_reloc: Option<&ObjReloc>) -> bool {
-    if let (Some(left), Some(right)) = (left_reloc, right_reloc) {
-        if left.kind != right.kind {
-            return false;
+    let (Some(left), Some(right)) = (left_reloc, right_reloc) else {
+        return false;
+    };
+    if left.kind != right.kind {
+        return false;
+    }
+
+    let name_matches = left.target.name == right.target.name;
+    match (&left.target_section, &right.target_section) {
+        (Some(sl), Some(sr)) => {
+            // Match if section and name or address match
+            sl == sr && (name_matches || address_eq(&left.target, &right.target))
         }
-        let name_matches = left.target.name == right.target.name;
-        match (&left.target_section, &right.target_section) {
-            (Some(sl), Some(sr)) => {
-                // Match if section and name or address match
-                sl == sr && (name_matches || address_eq(&left.target, &right.target))
-            }
-            (Some(_), None) => false,
-            (None, Some(_)) => {
-                // Match if possibly stripped weak symbol
-                name_matches && right.target.flags.0.contains(ObjSymbolFlags::Weak)
-            }
-            (None, None) => name_matches,
+        (Some(_), None) => false,
+        (None, Some(_)) => {
+            // Match if possibly stripped weak symbol
+            name_matches && right.target.flags.0.contains(ObjSymbolFlags::Weak)
         }
-    } else {
-        false
+        (None, None) => name_matches,
     }
 }
 
@@ -258,8 +267,8 @@ fn arg_eq(
                     right_diff.ins.as_ref().and_then(|i| i.reloc.as_ref()),
                 )
         }
-        ObjInsArg::MipsArg(ls) => {
-            matches!(right, ObjInsArg::MipsArg(rs) if ls == rs)
+        ObjInsArg::MipsArg(ls) | ObjInsArg::MipsArgWithBase(ls) => {
+            matches!(right, ObjInsArg::MipsArg(rs) | ObjInsArg::MipsArgWithBase(rs) if ls == rs)
         }
         ObjInsArg::BranchOffset(_) => {
             // Compare dest instruction idx after diffing
@@ -314,7 +323,7 @@ fn compare_ins(
                 let a_str = match a {
                     ObjInsArg::PpcArg(arg) => format!("{arg}"),
                     ObjInsArg::Reloc | ObjInsArg::RelocWithBase => String::new(),
-                    ObjInsArg::MipsArg(str) => str.clone(),
+                    ObjInsArg::MipsArg(str) | ObjInsArg::MipsArgWithBase(str) => str.clone(),
                     ObjInsArg::BranchOffset(arg) => format!("{arg}"),
                 };
                 let a_diff = if let Some(idx) = state.left_args_idx.get(&a_str) {
@@ -328,7 +337,7 @@ fn compare_ins(
                 let b_str = match b {
                     ObjInsArg::PpcArg(arg) => format!("{arg}"),
                     ObjInsArg::Reloc | ObjInsArg::RelocWithBase => String::new(),
-                    ObjInsArg::MipsArg(str) => str.clone(),
+                    ObjInsArg::MipsArg(str) | ObjInsArg::MipsArgWithBase(str) => str.clone(),
                     ObjInsArg::BranchOffset(arg) => format!("{arg}"),
                 };
                 let b_diff = if let Some(idx) = state.right_args_idx.get(&b_str) {
@@ -353,53 +362,56 @@ fn compare_ins(
     Ok(result)
 }
 
-fn find_section<'a>(obj: &'a mut ObjInfo, name: &str) -> Option<&'a mut ObjSection> {
-    obj.sections.iter_mut().find(|s| s.name == name)
-}
-
-fn find_symbol<'a>(symbols: &'a mut [ObjSymbol], name: &str) -> Option<&'a mut ObjSymbol> {
-    symbols.iter_mut().find(|s| s.name == name)
+fn find_section_and_symbol(obj: &ObjInfo, name: &str) -> Option<(usize, usize)> {
+    for (section_idx, section) in obj.sections.iter().enumerate() {
+        let symbol_idx = match section.symbols.iter().position(|symbol| symbol.name == name) {
+            Some(symbol_idx) => symbol_idx,
+            None => continue,
+        };
+        return Some((section_idx, symbol_idx));
+    }
+    None
 }
 
 pub fn diff_objs(left: &mut ObjInfo, right: &mut ObjInfo, _diff_config: &DiffConfig) -> Result<()> {
     for left_section in &mut left.sections {
-        if let Some(right_section) = find_section(right, &left_section.name) {
-            if left_section.kind == ObjSectionKind::Code {
-                for left_symbol in &mut left_section.symbols {
-                    if let Some(right_symbol) =
-                        find_symbol(&mut right_section.symbols, &left_symbol.name)
-                    {
-                        left_symbol.diff_symbol = Some(right_symbol.name.clone());
-                        right_symbol.diff_symbol = Some(left_symbol.name.clone());
-                        diff_code(
-                            left.architecture,
-                            &left_section.data,
-                            &right_section.data,
-                            left_symbol,
-                            right_symbol,
-                            &left_section.relocations,
-                            &right_section.relocations,
-                        )?;
-                    } else {
-                        no_diff_code(
-                            left.architecture,
-                            &left_section.data,
-                            left_symbol,
-                            &left_section.relocations,
-                        )?;
-                    }
+        if left_section.kind == ObjSectionKind::Code {
+            for left_symbol in &mut left_section.symbols {
+                if let Some((right_section_idx, right_symbol_idx)) =
+                    find_section_and_symbol(right, &left_symbol.name)
+                {
+                    let right_section = &mut right.sections[right_section_idx];
+                    let right_symbol = &mut right_section.symbols[right_symbol_idx];
+                    left_symbol.diff_symbol = Some(right_symbol.name.clone());
+                    right_symbol.diff_symbol = Some(left_symbol.name.clone());
+                    diff_code(
+                        left.architecture,
+                        &left_section.data,
+                        &right_section.data,
+                        left_symbol,
+                        right_symbol,
+                        &left_section.relocations,
+                        &right_section.relocations,
+                        &left.line_info,
+                        &right.line_info,
+                    )?;
+                } else {
+                    no_diff_code(
+                        left.architecture,
+                        &left_section.data,
+                        left_symbol,
+                        &left_section.relocations,
+                        &left.line_info,
+                    )?;
                 }
-                for right_symbol in &mut right_section.symbols {
-                    if right_symbol.instructions.is_empty() {
-                        no_diff_code(
-                            left.architecture,
-                            &right_section.data,
-                            right_symbol,
-                            &right_section.relocations,
-                        )?;
-                    }
-                }
-            } else if left_section.kind == ObjSectionKind::Data {
+            }
+        } else {
+            let Some(right_section) =
+                right.sections.iter_mut().find(|s| s.name == left_section.name)
+            else {
+                continue;
+            };
+            if left_section.kind == ObjSectionKind::Data {
                 diff_data(left_section, right_section);
                 // diff_data_symbols(left_section, right_section)?;
             } else if left_section.kind == ObjSectionKind::Bss {
@@ -407,13 +419,26 @@ pub fn diff_objs(left: &mut ObjInfo, right: &mut ObjInfo, _diff_config: &DiffCon
             }
         }
     }
+    for right_section in right.sections.iter_mut().filter(|s| s.kind == ObjSectionKind::Code) {
+        for right_symbol in &mut right_section.symbols {
+            if right_symbol.instructions.is_empty() {
+                no_diff_code(
+                    right.architecture,
+                    &right_section.data,
+                    right_symbol,
+                    &right_section.relocations,
+                    &right.line_info,
+                )?;
+            }
+        }
+    }
     diff_bss_symbols(&mut left.common, &mut right.common)?;
     Ok(())
 }
 
 fn diff_bss_symbols(left_symbols: &mut [ObjSymbol], right_symbols: &mut [ObjSymbol]) -> Result<()> {
     for left_symbol in left_symbols {
-        if let Some(right_symbol) = find_symbol(right_symbols, &left_symbol.name) {
+        if let Some(right_symbol) = right_symbols.iter_mut().find(|s| s.name == left_symbol.name) {
             left_symbol.diff_symbol = Some(right_symbol.name.clone());
             right_symbol.diff_symbol = Some(left_symbol.name.clone());
             let percent = if left_symbol.size == right_symbol.size { 100.0 } else { 50.0 };
@@ -500,13 +525,12 @@ fn diff_data(left: &mut ObjSection, right: &mut ObjSection) {
     let mut right_diff = Vec::<ObjDataDiff>::new();
     let mut left_cur = 0usize;
     let mut right_cur = 0usize;
-    let mut cur_op = LevEditType::Keep;
+    let mut cur_op = LevEditType::Replace;
     let mut cur_left_data = Vec::<u8>::new();
     let mut cur_right_data = Vec::<u8>::new();
     for op in edit_ops {
         if cur_op != op.op_type || left_cur < op.first_start || right_cur < op.second_start {
             match cur_op {
-                LevEditType::Keep => {}
                 LevEditType::Replace => {
                     let left_data = take(&mut cur_left_data);
                     let right_data = take(&mut cur_right_data);
@@ -592,7 +616,6 @@ fn diff_data(left: &mut ObjSection, right: &mut ObjSection) {
                 cur_left_data.push(left.data[left_cur]);
                 left_cur += 1;
             }
-            LevEditType::Keep => unreachable!(),
         }
         cur_op = op.op_type;
     }
@@ -616,7 +639,6 @@ fn diff_data(left: &mut ObjSection, right: &mut ObjSection) {
 
     // TODO: merge with above
     match cur_op {
-        LevEditType::Keep => {}
         LevEditType::Replace => {
             let left_data = take(&mut cur_left_data);
             let right_data = take(&mut cur_right_data);

src/editops.rs

@@ -27,7 +27,6 @@
 
 #[derive(Debug, PartialEq, Eq, Copy, Clone)]
 pub enum LevEditType {
-    Keep,
     Replace,
     Insert,
     Delete,
@@ -40,25 +39,15 @@ pub struct LevEditOp {
     pub second_start: usize,  /* destination position */
 }
 
-#[derive(Debug, PartialEq, Eq)]
-pub struct LevMatchingBlock {
-    pub first_start: usize,
-    pub second_start: usize,
-    pub len: usize,
-}
-
 pub fn editops_find<T>(query: &[T], choice: &[T]) -> Vec<LevEditOp>
 where T: PartialEq {
-    let string_affix = Affix::find(query, choice);
+    let Affix { prefix_len, suffix_len } = Affix::find(query, choice);
 
-    let first_string_len = string_affix.first_string_len;
-    let second_string_len = string_affix.second_string_len;
-    let prefix_len = string_affix.prefix_len;
-    let first_string = &query[prefix_len..prefix_len + first_string_len];
-    let second_string = &choice[prefix_len..prefix_len + second_string_len];
+    let first_string = &query[prefix_len..query.len() - suffix_len];
+    let second_string = &choice[prefix_len..choice.len() - suffix_len];
 
-    let matrix_columns = first_string_len + 1;
-    let matrix_rows = second_string_len + 1;
+    let matrix_columns = first_string.len() + 1;
+    let matrix_rows = second_string.len() + 1;
 
     // TODO maybe use an actual matrix for readability
     let mut cache_matrix: Vec<usize> = vec![0; matrix_rows * matrix_columns];
@@ -87,98 +76,66 @@ where T: PartialEq {
             cache_matrix[current + 1 + p] = x;
         }
     }
-    editops_from_cost_matrix(
-        first_string,
-        second_string,
-        matrix_columns,
-        matrix_rows,
-        prefix_len,
-        cache_matrix,
-    )
+    editops_from_cost_matrix(matrix_columns, matrix_rows, prefix_len, cache_matrix)
 }
 
-fn editops_from_cost_matrix<T>(
-    string1: &[T],
-    string2: &[T],
+fn editops_from_cost_matrix(
     len1: usize,
     len2: usize,
     prefix_len: usize,
     cache_matrix: Vec<usize>,
-) -> Vec<LevEditOp>
-where
-    T: PartialEq,
-{
+) -> Vec<LevEditOp> {
+    let mut ops = Vec::with_capacity(cache_matrix[len1 * len2 - 1]);
     let mut dir = 0;
-
-    let mut ops: Vec<LevEditOp> = vec![];
-    ops.reserve(cache_matrix[len1 * len2 - 1]);
-
     let mut i = len1 - 1;
     let mut j = len2 - 1;
     let mut p = len1 * len2 - 1;
 
-    // let string1_chars: Vec<char> = string1.chars().collect();
-    // let string2_chars: Vec<char> = string2.chars().collect();
-
     //TODO this is still pretty ugly
     while i > 0 || j > 0 {
         let current_value = cache_matrix[p];
 
-        let op_type;
+        // More than one operation can be possible at a time. We use `dir` to
+        // decide when ambiguous.
+        let is_insert = j > 0 && current_value == cache_matrix[p - 1] + 1;
+        let is_delete = i > 0 && current_value == cache_matrix[p - len2] + 1;
+        let is_replace = i > 0 && j > 0 && current_value == cache_matrix[p - len2 - 1] + 1;
 
-        if dir == -1 && j > 0 && current_value == cache_matrix[p - 1] + 1 {
-            op_type = LevEditType::Insert;
-        } else if dir == 1 && i > 0 && current_value == cache_matrix[p - len2] + 1 {
-            op_type = LevEditType::Delete;
-        } else if i > 0
-            && j > 0
-            && current_value == cache_matrix[p - len2 - 1]
-            && string1[i - 1] == string2[j - 1]
-        {
-            op_type = LevEditType::Keep;
-        } else if i > 0 && j > 0 && current_value == cache_matrix[p - len2 - 1] + 1 {
-            op_type = LevEditType::Replace;
-        }
-        /* we can't turn directly from -1 to 1, in this case it would be better
-         * to go diagonally, but check it (dir == 0) */
-        else if dir == 0 && j > 0 && current_value == cache_matrix[p - 1] + 1 {
-            op_type = LevEditType::Insert;
-        } else if dir == 0 && i > 0 && current_value == cache_matrix[p - len2] + 1 {
-            op_type = LevEditType::Delete;
-        } else {
-            panic!("something went terribly wrong");
-        }
-
-        match op_type {
-            LevEditType::Insert => {
-                j -= 1;
-                p -= 1;
-                dir = -1;
-            }
-            LevEditType::Delete => {
-                i -= 1;
-                p -= len2;
-                dir = 1;
-            }
-            LevEditType::Replace => {
-                i -= 1;
-                j -= 1;
-                p -= len2 + 1;
-                dir = 0;
-            }
-            LevEditType::Keep => {
-                i -= 1;
-                j -= 1;
-                p -= len2 + 1;
-                dir = 0;
-                /* LevEditKeep does not has to be stored */
-                continue;
-            }
+        let (op_type, new_dir) = match (dir, is_insert, is_delete, is_replace) {
+            (_, false, false, false) => (None, 0),
+            (-1, true, _, _) => (Some(LevEditType::Insert), -1),
+            (1, _, true, _) => (Some(LevEditType::Delete), 1),
+            (_, _, _, true) => (Some(LevEditType::Replace), 0),
+            (0, true, _, _) => (Some(LevEditType::Insert), -1),
+            (0, _, true, _) => (Some(LevEditType::Delete), 1),
+            _ => panic!("something went terribly wrong"),
         };
 
-        let edit_op =
-            LevEditOp { op_type, first_start: i + prefix_len, second_start: j + prefix_len };
-        ops.insert(0, edit_op);
+        match new_dir {
+            -1 => {
+                j -= 1;
+                p -= 1;
+            }
+            1 => {
+                i -= 1;
+                p -= len2;
+            }
+            0 => {
+                i -= 1;
+                j -= 1;
+                p -= len2 + 1;
+            }
+            _ => panic!("something went terribly wrong"),
+        };
+        dir = new_dir;
+
+        if let Some(op_type) = op_type {
+            ops.insert(0, LevEditOp {
+                op_type,
+                first_start: i + prefix_len,
+                second_start: j + prefix_len,
+            });
+        }
     }
 
     ops
@@ -186,73 +143,20 @@ where
 
 pub struct Affix {
     pub prefix_len: usize,
-    pub first_string_len: usize,
-    pub second_string_len: usize,
+    pub suffix_len: usize,
 }
 
 impl Affix {
-    pub fn find<T>(first_string: &[T], second_string: &[T]) -> Affix
+    pub fn find<T>(s1: &[T], s2: &[T]) -> Affix
     where T: PartialEq {
-        // remove common prefix and suffix (linear vs square runtime for levensthein)
-        let mut first_iter = first_string.iter();
-        let mut second_iter = second_string.iter();
+        let prefix_len = s1.iter().zip(s2.iter()).take_while(|t| t.0 == t.1).count();
+        let suffix_len = s1[prefix_len..]
+            .iter()
+            .rev()
+            .zip(s2[prefix_len..].iter().rev())
+            .take_while(|t| t.0 == t.1)
+            .count();
 
-        let mut limit_start = 0;
-
-        let mut first_iter_char = first_iter.next();
-        let mut second_iter_char = second_iter.next();
-        while first_iter_char.is_some() && first_iter_char == second_iter_char {
-            first_iter_char = first_iter.next();
-            second_iter_char = second_iter.next();
-            limit_start += 1;
-        }
-
-        // save char since the iterator was already consumed
-        let first_iter_cache = first_iter_char;
-        let second_iter_cache = second_iter_char;
-
-        if second_iter_char.is_some() && first_iter_char.is_some() {
-            first_iter_char = first_iter.next_back();
-            second_iter_char = second_iter.next_back();
-            while first_iter_char.is_some() && first_iter_char == second_iter_char {
-                first_iter_char = first_iter.next_back();
-                second_iter_char = second_iter.next_back();
-            }
-        }
-
-        match (first_iter_char, second_iter_char) {
-            (None, None) => {
-                // characters might not match even though they were consumed
-                let remaining_char = (first_iter_cache != second_iter_cache) as usize;
-                Affix {
-                    prefix_len: limit_start,
-                    first_string_len: remaining_char,
-                    second_string_len: remaining_char,
-                }
-            }
-            (None, _) => {
-                let remaining_char =
-                    (first_iter_cache.is_some() && first_iter_cache != second_iter_char) as usize;
-                Affix {
-                    prefix_len: limit_start,
-                    first_string_len: remaining_char,
-                    second_string_len: second_iter.count() + 1 + remaining_char,
-                }
-            }
-            (_, None) => {
-                let remaining_char =
-                    (second_iter_cache.is_some() && second_iter_cache != first_iter_char) as usize;
-                Affix {
-                    prefix_len: limit_start,
-                    first_string_len: first_iter.count() + 1 + remaining_char,
-                    second_string_len: remaining_char,
-                }
-            }
-            _ => Affix {
-                prefix_len: limit_start,
-                first_string_len: first_iter.count() + 2,
-                second_string_len: second_iter.count() + 2,
-            },
-        }
+        Affix { prefix_len, suffix_len }
     }
 }

src/jobs/update.rs

@@ -1,6 +1,5 @@
 use std::{
     env::{current_dir, current_exe},
-    fs,
     fs::File,
     path::PathBuf,
     sync::mpsc::Receiver,
@@ -44,7 +43,7 @@ fn run_update(status: &Status, cancel: Receiver<()>) -> Result<Box<UpdateResult>
         .to_dest(&target_file)?;
     #[cfg(unix)]
     {
-        use std::os::unix::fs::PermissionsExt;
+        use std::{fs, os::unix::fs::PermissionsExt};
         let mut perms = fs::metadata(&target_file)?.permissions();
         perms.set_mode(0o755);
         fs::set_permissions(&target_file, perms)?;

src/main.rs

@@ -3,9 +3,27 @@
 
 use std::{path::PathBuf, rc::Rc, sync::Mutex};
 
+use anyhow::{Error, Result};
 use cfg_if::cfg_if;
+use eframe::IconData;
 use time::UtcOffset;
 
+fn load_icon() -> Result<IconData> {
+    use bytes::Buf;
+    let decoder = png::Decoder::new(include_bytes!("../assets/icon_64.png").reader());
+    let mut reader = decoder.read_info()?;
+    let mut buf = vec![0; reader.output_buffer_size()];
+    let info = reader.next_frame(&mut buf)?;
+    if info.bit_depth != png::BitDepth::Eight {
+        return Err(Error::msg("Invalid bit depth"));
+    }
+    if info.color_type != png::ColorType::Rgba {
+        return Err(Error::msg("Invalid color type"));
+    }
+    buf.truncate(info.buffer_size());
+    Ok(IconData { rgba: buf, width: info.width, height: info.height })
+}
+
 // When compiling natively:
 #[cfg(not(target_arch = "wasm32"))]
 fn main() {
@@ -19,13 +37,26 @@ fn main() {
 
     let exec_path: Rc<Mutex<Option<PathBuf>>> = Rc::new(Mutex::new(None));
     let exec_path_clone = exec_path.clone();
-    let native_options = eframe::NativeOptions::default();
-    // native_options.renderer = eframe::Renderer::Wgpu;
+    let mut native_options =
+        eframe::NativeOptions { follow_system_theme: false, ..Default::default() };
+    match load_icon() {
+        Ok(data) => {
+            native_options.icon_data = Some(data);
+        }
+        Err(e) => {
+            log::warn!("Failed to load application icon: {}", e);
+        }
+    }
+    #[cfg(feature = "wgpu")]
+    {
+        native_options.renderer = eframe::Renderer::Wgpu;
+    }
     eframe::run_native(
         "objdiff",
         native_options,
         Box::new(move |cc| Box::new(objdiff::App::new(cc, utc_offset, exec_path_clone))),
-    );
+    )
+    .expect("Failed to run eframe application");
 
     // Attempt to relaunch application from the updated path
     if let Ok(mut guard) = exec_path.lock() {
@@ -35,7 +66,7 @@ fn main() {
                     let result = exec::Command::new(path)
                         .args(&std::env::args().collect::<Vec<String>>())
                         .exec();
-                    eprintln!("Failed to relaunch: {result:?}");
+                    log::error!("Failed to relaunch: {result:?}");
                 } else {
                     let result = std::process::Command::new(path)
                         .args(std::env::args())
@@ -43,7 +74,7 @@ fn main() {
                         .unwrap()
                         .wait();
                     if let Err(e) = result {
-                        eprintln!("Failed to relaunch: {:?}", e);
+                        log::error!("Failed to relaunch: {:?}", e);
                     }
                 }
             }

src/obj/elf.rs

@@ -1,15 +1,12 @@
-use std::{fs, path::Path};
+use std::{collections::BTreeMap, fs, io::Cursor, path::Path};
 
-use anyhow::{Context, Result};
+use anyhow::{anyhow, bail, Context, Result};
+use byteorder::{BigEndian, ReadBytesExt};
 use cwdemangle::demangle;
 use flagset::Flags;
 use object::{
-    elf::{
-        R_MIPS_26, R_MIPS_HI16, R_MIPS_LO16, R_PPC_ADDR16_HA, R_PPC_ADDR16_HI, R_PPC_ADDR16_LO,
-        R_PPC_EMB_SDA21, R_PPC_REL14, R_PPC_REL24,
-    },
-    Architecture, File, Object, ObjectSection, ObjectSymbol, RelocationKind, RelocationTarget,
-    SectionKind, Symbol, SymbolKind, SymbolSection,
+    elf, Architecture, File, Object, ObjectSection, ObjectSymbol, RelocationKind, RelocationTarget,
+    SectionIndex, SectionKind, Symbol, SymbolKind, SymbolSection,
 };
 
 use crate::obj::{
@@ -17,19 +14,19 @@ use crate::obj::{
     ObjSymbolFlagSet, ObjSymbolFlags,
 };
 
-fn to_obj_section_kind(kind: SectionKind) -> ObjSectionKind {
+fn to_obj_section_kind(kind: SectionKind) -> Option<ObjSectionKind> {
     match kind {
-        SectionKind::Text => ObjSectionKind::Code,
-        SectionKind::Data | SectionKind::ReadOnlyData => ObjSectionKind::Data,
-        SectionKind::UninitializedData => ObjSectionKind::Bss,
-        _ => panic!("Unhandled section kind {kind:?}"),
+        SectionKind::Text => Some(ObjSectionKind::Code),
+        SectionKind::Data | SectionKind::ReadOnlyData => Some(ObjSectionKind::Data),
+        SectionKind::UninitializedData => Some(ObjSectionKind::Bss),
+        _ => None,
     }
 }
 
 fn to_obj_symbol(obj_file: &File<'_>, symbol: &Symbol<'_, '_>, addend: i64) -> Result<ObjSymbol> {
     let mut name = symbol.name().context("Failed to process symbol name")?;
     if name.is_empty() {
-        println!("Found empty sym: {symbol:?}");
+        log::warn!("Found empty sym: {symbol:?}");
         name = "?";
     }
     let mut flags = ObjSymbolFlagSet(ObjSymbolFlags::none());
@@ -73,18 +70,14 @@ fn filter_sections(obj_file: &File<'_>) -> Result<Vec<ObjSection>> {
         if section.size() == 0 {
             continue;
         }
-        if section.kind() != SectionKind::Text
-            && section.kind() != SectionKind::Data
-            && section.kind() != SectionKind::ReadOnlyData
-            && section.kind() != SectionKind::UninitializedData
-        {
+        let Some(kind) = to_obj_section_kind(section.kind()) else {
             continue;
-        }
+        };
         let name = section.name().context("Failed to process section name")?;
         let data = section.uncompressed_data().context("Failed to read section data")?;
         result.push(ObjSection {
             name: name.to_string(),
-            kind: to_obj_section_kind(section.kind()),
+            kind,
             address: section.address(),
             size: section.size(),
             data: data.to_vec(),
@@ -133,13 +126,11 @@ fn symbols_by_section(obj_file: &File<'_>, section: &ObjSection) -> Result<Vec<O
 }
 
 fn common_symbols(obj_file: &File<'_>) -> Result<Vec<ObjSymbol>> {
-    let mut result = Vec::<ObjSymbol>::new();
-    for symbol in obj_file.symbols() {
-        if symbol.is_common() {
-            result.push(to_obj_symbol(obj_file, &symbol, 0)?);
-        }
-    }
-    Ok(result)
+    obj_file
+        .symbols()
+        .filter(Symbol::is_common)
+        .map(|symbol| to_obj_symbol(obj_file, &symbol, 0))
+        .collect::<Result<Vec<ObjSymbol>>>()
 }
 
 fn find_section_symbol(
@@ -192,9 +183,7 @@ fn relocations_by_section(
     obj_file: &File<'_>,
     section: &mut ObjSection,
 ) -> Result<Vec<ObjReloc>> {
-    let obj_section = obj_file
-        .section_by_name(&section.name)
-        .ok_or_else(|| anyhow::Error::msg("Failed to locate section"))?;
+    let obj_section = obj_file.section_by_index(SectionIndex(section.index))?;
     let mut relocations = Vec::<ObjReloc>::new();
     for (address, reloc) in obj_section.relocations() {
         let symbol = match reloc.target() {
@@ -212,12 +201,12 @@ fn relocations_by_section(
             RelocationKind::Absolute => ObjRelocKind::Absolute,
             RelocationKind::Elf(kind) => match arch {
                 ObjArchitecture::PowerPc => match kind {
-                    R_PPC_ADDR16_LO => ObjRelocKind::PpcAddr16Lo,
-                    R_PPC_ADDR16_HI => ObjRelocKind::PpcAddr16Hi,
-                    R_PPC_ADDR16_HA => ObjRelocKind::PpcAddr16Ha,
-                    R_PPC_REL24 => ObjRelocKind::PpcRel24,
-                    R_PPC_REL14 => ObjRelocKind::PpcRel14,
-                    R_PPC_EMB_SDA21 => ObjRelocKind::PpcEmbSda21,
+                    elf::R_PPC_ADDR16_LO => ObjRelocKind::PpcAddr16Lo,
+                    elf::R_PPC_ADDR16_HI => ObjRelocKind::PpcAddr16Hi,
+                    elf::R_PPC_ADDR16_HA => ObjRelocKind::PpcAddr16Ha,
+                    elf::R_PPC_REL24 => ObjRelocKind::PpcRel24,
+                    elf::R_PPC_REL14 => ObjRelocKind::PpcRel14,
+                    elf::R_PPC_EMB_SDA21 => ObjRelocKind::PpcEmbSda21,
                     _ => {
                         return Err(anyhow::Error::msg(format!(
                             "Unhandled PPC relocation type: {kind}"
@@ -225,14 +214,14 @@ fn relocations_by_section(
                     }
                 },
                 ObjArchitecture::Mips => match kind {
-                    R_MIPS_26 => ObjRelocKind::Mips26,
-                    R_MIPS_HI16 => ObjRelocKind::MipsHi16,
-                    R_MIPS_LO16 => ObjRelocKind::MipsLo16,
-                    _ => {
-                        return Err(anyhow::Error::msg(format!(
-                            "Unhandled MIPS relocation type: {kind}"
-                        )))
-                    }
+                    elf::R_MIPS_26 => ObjRelocKind::Mips26,
+                    elf::R_MIPS_HI16 => ObjRelocKind::MipsHi16,
+                    elf::R_MIPS_LO16 => ObjRelocKind::MipsLo16,
+                    elf::R_MIPS_GOT16 => ObjRelocKind::MipsGot16,
+                    elf::R_MIPS_CALL16 => ObjRelocKind::MipsCall16,
+                    elf::R_MIPS_GPREL16 => ObjRelocKind::MipsGpRel16,
+                    elf::R_MIPS_GPREL32 => ObjRelocKind::MipsGpRel32,
+                    _ => bail!("Unhandled MIPS relocation type: {kind}"),
                 },
             },
             _ => {
@@ -249,43 +238,68 @@ fn relocations_by_section(
             }
             _ => None,
         };
-        // println!("Reloc: {:?}, symbol: {:?}", reloc, symbol);
+        let addend = if reloc.has_implicit_addend() {
+            let addend = u32::from_be_bytes(
+                section.data[address as usize..address as usize + 4].try_into()?,
+            );
+            match kind {
+                ObjRelocKind::Absolute => addend as i64,
+                ObjRelocKind::MipsHi16 => ((addend & 0x0000FFFF) << 16) as i32 as i64,
+                ObjRelocKind::MipsLo16
+                | ObjRelocKind::MipsGot16
+                | ObjRelocKind::MipsCall16
+                | ObjRelocKind::MipsGpRel16 => (addend & 0x0000FFFF) as i16 as i64,
+                ObjRelocKind::MipsGpRel32 => addend as i32 as i64,
+                ObjRelocKind::Mips26 => ((addend & 0x03FFFFFF) << 2) as i64,
+                _ => bail!("Unsupported implicit relocation {kind:?}"),
+            }
+        } else {
+            reloc.addend()
+        };
+        // println!("Reloc: {reloc:?}, symbol: {symbol:?}, addend: {addend:#X}");
         let target = match symbol.kind() {
-            SymbolKind::Text | SymbolKind::Data | SymbolKind::Unknown => {
-                to_obj_symbol(obj_file, &symbol, reloc.addend())
+            SymbolKind::Text | SymbolKind::Data | SymbolKind::Label | SymbolKind::Unknown => {
+                to_obj_symbol(obj_file, &symbol, addend)
             }
             SymbolKind::Section => {
-                let addend = if reloc.has_implicit_addend() {
-                    let addend = u32::from_be_bytes(
-                        section.data[address as usize..address as usize + 4].try_into()?,
-                    );
-                    match kind {
-                        ObjRelocKind::Absolute => addend,
-                        ObjRelocKind::MipsHi16 | ObjRelocKind::MipsLo16 => addend & 0x0000FFFF,
-                        ObjRelocKind::Mips26 => (addend & 0x03FFFFFF) * 4,
-                        _ => todo!(),
-                    }
-                } else {
-                    let addend = reloc.addend();
-                    if addend < 0 {
-                        return Err(anyhow::Error::msg(format!(
-                            "Negative addend in section reloc: {addend}"
-                        )));
-                    }
-                    addend as u32
-                };
+                if addend < 0 {
+                    return Err(anyhow::Error::msg(format!("Negative addend in reloc: {addend}")));
+                }
                 find_section_symbol(obj_file, &symbol, addend as u64)
             }
-            _ => Err(anyhow::Error::msg(format!(
-                "Unhandled relocation symbol type {:?}",
-                symbol.kind()
-            ))),
+            kind => Err(anyhow!("Unhandled relocation symbol type {kind:?}")),
         }?;
         relocations.push(ObjReloc { kind, address, target, target_section });
     }
     Ok(relocations)
 }
 
+fn line_info(obj_file: &File<'_>) -> Result<Option<BTreeMap<u32, u32>>> {
+    if let Some(section) = obj_file.section_by_name(".line") {
+        if section.size() == 0 {
+            return Ok(None);
+        }
+        let data = section.uncompressed_data()?;
+        let mut reader = Cursor::new(data.as_ref());
+
+        let mut map = BTreeMap::new();
+        let size = reader.read_u32::<BigEndian>()?;
+        let base_address = reader.read_u32::<BigEndian>()?;
+        while reader.position() < size as u64 {
+            let line_number = reader.read_u32::<BigEndian>()?;
+            let statement_pos = reader.read_u16::<BigEndian>()?;
+            if statement_pos != 0xFFFF {
+                log::warn!("Unhandled statement pos {}", statement_pos);
+            }
+            let address_delta = reader.read_u32::<BigEndian>()?;
+            map.insert(base_address + address_delta, line_number);
+        }
+        log::debug!("Line info: {map:#X?}");
+        return Ok(Some(map));
+    }
+    Ok(None)
+}
+
 pub fn read(obj_path: &Path) -> Result<ObjInfo> {
     let data = {
         let file = fs::File::open(obj_path)?;
@@ -307,6 +321,7 @@ pub fn read(obj_path: &Path) -> Result<ObjInfo> {
         path: obj_path.to_owned(),
         sections: filter_sections(&obj_file)?,
         common: common_symbols(&obj_file)?,
+        line_info: line_info(&obj_file)?,
     };
     for section in &mut result.sections {
         section.symbols = symbols_by_section(&obj_file, section)?;

src/obj/mips.rs

@@ -1,15 +1,24 @@
+use std::collections::BTreeMap;
+
 use anyhow::Result;
-use rabbitizer::{config_set_register_fpr_abi_names, Abi, Instruction, SimpleOperandType};
+use rabbitizer::{config, Abi, InstrCategory, Instruction, OperandType};
 
 use crate::obj::{ObjIns, ObjInsArg, ObjReloc};
 
+fn configure_rabbitizer() {
+    unsafe {
+        config::RabbitizerConfig_Cfg.reg_names.fpr_abi_names = Abi::O32;
+    }
+}
+
 pub fn process_code(
     data: &[u8],
     start_address: u64,
     end_address: u64,
     relocs: &[ObjReloc],
+    line_info: &Option<BTreeMap<u32, u32>>,
 ) -> Result<(Vec<u8>, Vec<ObjIns>)> {
-    config_set_register_fpr_abi_names(Abi::RABBITIZER_ABI_O32);
+    configure_rabbitizer();
 
     let ins_count = data.len() / 4;
     let mut ops = Vec::<u8>::with_capacity(ins_count);
@@ -18,47 +27,61 @@ pub fn process_code(
     for chunk in data.chunks_exact(4) {
         let reloc = relocs.iter().find(|r| (r.address as u32 & !3) == cur_addr);
         let code = u32::from_be_bytes(chunk.try_into()?);
-        let mut instruction = Instruction::new(code, cur_addr);
+        let instruction = Instruction::new(code, cur_addr, InstrCategory::CPU);
 
-        let op = instruction.instr_id() as u8;
+        let op = instruction.unique_id as u8;
         ops.push(op);
 
-        let mnemonic = instruction.instr_id().get_opcode_name().unwrap_or_default().to_string();
+        let mnemonic = instruction.opcode_name().to_string();
         let is_branch = instruction.is_branch();
         let branch_offset = instruction.branch_offset();
         let branch_dest =
             if is_branch { Some((cur_addr as i32 + branch_offset) as u32) } else { None };
-        let args = instruction
-            .simple_operands()
-            .iter()
-            .map(|op| match op.kind {
-                SimpleOperandType::Imm | SimpleOperandType::Label => {
+
+        let operands = instruction.get_operands_slice();
+        let mut args = Vec::with_capacity(operands.len() + 1);
+        for op in operands {
+            match op {
+                OperandType::cpu_immediate
+                | OperandType::cpu_label
+                | OperandType::cpu_branch_target_label => {
                     if is_branch {
-                        ObjInsArg::BranchOffset(branch_offset)
+                        args.push(ObjInsArg::BranchOffset(branch_offset));
                     } else if let Some(reloc) = reloc {
                         if matches!(&reloc.target_section, Some(s) if s == ".text")
                             && reloc.target.address > start_address
                             && reloc.target.address < end_address
                         {
                             // Inter-function reloc, convert to branch offset
-                            ObjInsArg::BranchOffset(reloc.target.address as i32 - cur_addr as i32)
+                            args.push(ObjInsArg::BranchOffset(
+                                reloc.target.address as i32 - cur_addr as i32,
+                            ));
                         } else {
-                            ObjInsArg::Reloc
+                            args.push(ObjInsArg::Reloc);
                         }
                     } else {
-                        ObjInsArg::MipsArg(op.disassembled.clone())
+                        args.push(ObjInsArg::MipsArg(op.disassemble(&instruction, None)));
                     }
                 }
-                SimpleOperandType::ImmBase => {
+                OperandType::cpu_immediate_base => {
                     if reloc.is_some() {
-                        ObjInsArg::RelocWithBase
+                        args.push(ObjInsArg::RelocWithBase);
                     } else {
-                        ObjInsArg::MipsArg(op.disassembled.clone())
+                        args.push(ObjInsArg::MipsArgWithBase(
+                            OperandType::cpu_immediate.disassemble(&instruction, None),
+                        ));
                     }
+                    args.push(ObjInsArg::MipsArg(
+                        OperandType::cpu_rs.disassemble(&instruction, None),
+                    ));
                 }
-                _ => ObjInsArg::MipsArg(op.disassembled.clone()),
-            })
-            .collect();
+                _ => {
+                    args.push(ObjInsArg::MipsArg(op.disassemble(&instruction, None)));
+                }
+            }
+        }
+        let line =
+            line_info.as_ref().and_then(|map| map.range(..=cur_addr).last().map(|(_, &b)| b));
         insts.push(ObjIns {
             address: cur_addr,
             code,
@@ -67,6 +90,7 @@ pub fn process_code(
             args,
             reloc: reloc.cloned(),
             branch_dest,
+            line,
         });
         cur_addr += 4;
     }

src/obj/mod.rs

@@ -2,7 +2,7 @@ pub mod elf;
 pub mod mips;
 pub mod ppc;
 
-use std::path::PathBuf;
+use std::{collections::BTreeMap, path::PathBuf};
 
 use flagset::{flags, FlagSet};
 
@@ -41,6 +41,7 @@ pub struct ObjSection {
 pub enum ObjInsArg {
     PpcArg(ppc750cl::Argument),
     MipsArg(String),
+    MipsArgWithBase(String),
     Reloc,
     RelocWithBase,
     BranchOffset(i32),
@@ -83,6 +84,8 @@ pub struct ObjIns {
     pub args: Vec<ObjInsArg>,
     pub reloc: Option<ObjReloc>,
     pub branch_dest: Option<u32>,
+    /// Line info
+    pub line: Option<u32>,
 }
 #[derive(Debug, Clone, Default)]
 pub struct ObjInsDiff {
@@ -138,6 +141,7 @@ pub struct ObjInfo {
     pub path: PathBuf,
     pub sections: Vec<ObjSection>,
     pub common: Vec<ObjSymbol>,
+    pub line_info: Option<BTreeMap<u32, u32>>,
 }
 #[derive(Debug, Eq, PartialEq, Copy, Clone)]
 pub enum ObjRelocKind {
@@ -155,6 +159,10 @@ pub enum ObjRelocKind {
     Mips26,
     MipsHi16,
     MipsLo16,
+    MipsGot16,
+    MipsCall16,
+    MipsGpRel16,
+    MipsGpRel32,
 }
 #[derive(Debug, Clone)]
 pub struct ObjReloc {

src/obj/ppc.rs

@@ -1,3 +1,5 @@
+use std::collections::BTreeMap;
+
 use anyhow::Result;
 use ppc750cl::{disasm_iter, Argument};
 
@@ -19,6 +21,7 @@ pub fn process_code(
     data: &[u8],
     address: u64,
     relocs: &[ObjReloc],
+    line_info: &Option<BTreeMap<u32, u32>>,
 ) -> Result<(Vec<u8>, Vec<ObjIns>)> {
     let ins_count = data.len() / 4;
     let mut ops = Vec::<u8>::with_capacity(ins_count);
@@ -74,6 +77,9 @@ pub fn process_code(
             }
         }
         ops.push(simplified.ins.op as u8);
+        let line = line_info
+            .as_ref()
+            .and_then(|map| map.range(..=simplified.ins.addr).last().map(|(_, &b)| b));
         insts.push(ObjIns {
             address: simplified.ins.addr,
             code: simplified.ins.code,
@@ -82,6 +88,7 @@ pub fn process_code(
             reloc: reloc.cloned(),
             op: 0,
             branch_dest: None,
+            line,
         });
     }
     Ok((ops, insts))

src/views/config.rs

@@ -5,7 +5,7 @@ use std::sync::{Arc, RwLock};
 #[cfg(windows)]
 use anyhow::{Context, Result};
 use const_format::formatcp;
-use egui::{output::OpenUrl, Color32};
+use egui::output::OpenUrl;
 use self_update::cargo_crate_version;
 
 use crate::{
@@ -74,19 +74,21 @@ pub fn config_ui(ui: &mut egui::Ui, config: &Arc<RwLock<AppConfig>>, view_state:
         ui.label(formatcp!("Git branch: {}", env!("VERGEN_GIT_BRANCH")));
         ui.label(formatcp!("Git commit: {}", env!("VERGEN_GIT_SHA")));
         ui.label(formatcp!("Build target: {}", env!("VERGEN_CARGO_TARGET_TRIPLE")));
-        ui.label(formatcp!("Build type: {}", env!("VERGEN_CARGO_PROFILE")));
+        ui.label(formatcp!("Debug: {}", env!("VERGEN_CARGO_DEBUG")));
     });
     if let Some(state) = &view_state.check_update {
         ui.label(format!("Latest version: {}", state.latest_release.version));
         if state.update_available {
-            ui.colored_label(Color32::LIGHT_GREEN, "Update available");
+            ui.colored_label(view_state.view_config.insert_color, "Update available");
             ui.horizontal(|ui| {
-                if state.found_binary && ui
+                if state.found_binary
+                    && ui
                         .button("Automatic")
                         .on_hover_text_at_pointer(
                             "Automatically download and replace the current build",
                         )
-                        .clicked() {
+                        .clicked()
+                {
                     view_state.jobs.push(queue_update());
                 }
                 if ui
@@ -94,8 +96,10 @@ pub fn config_ui(ui: &mut egui::Ui, config: &Arc<RwLock<AppConfig>>, view_state:
                     .on_hover_text_at_pointer("Open a link to the latest release on GitHub")
                     .clicked()
                 {
-                    ui.output().open_url =
-                        Some(OpenUrl { url: RELEASE_URL.to_string(), new_tab: true });
+                    ui.output_mut(|output| {
+                        output.open_url =
+                            Some(OpenUrl { url: RELEASE_URL.to_string(), new_tab: true })
+                    });
                 }
             });
         }
@@ -183,20 +187,18 @@ pub fn config_ui(ui: &mut egui::Ui, config: &Arc<RwLock<AppConfig>>, view_state:
             ui.separator();
         }
 
-        if let Some(base_dir) = base_obj_dir {
+        if let (Some(base_dir), Some(target_dir)) = (base_obj_dir, target_obj_dir) {
             if ui.button("Select obj").clicked() {
                 if let Some(path) = rfd::FileDialog::new()
-                    .set_directory(&base_dir)
+                    .set_directory(&target_dir)
                     .add_filter("Object file", &["o", "elf"])
                     .pick_file()
                 {
                     let mut new_build_obj: Option<String> = None;
                     if let Ok(obj_path) = path.strip_prefix(&base_dir) {
                         new_build_obj = Some(obj_path.display().to_string());
-                    } else if let Some(build_asm_dir) = target_obj_dir {
-                        if let Ok(obj_path) = path.strip_prefix(&build_asm_dir) {
-                            new_build_obj = Some(obj_path.display().to_string());
-                        }
+                    } else if let Ok(obj_path) = path.strip_prefix(&target_dir) {
+                        new_build_obj = Some(obj_path.display().to_string());
                     }
                     if let Some(new_build_obj) = new_build_obj {
                         *obj_path = Some(new_build_obj);
@@ -247,6 +249,6 @@ pub fn config_ui(ui: &mut egui::Ui, config: &Arc<RwLock<AppConfig>>, view_state:
         }
     }
 
-    ui.checkbox(&mut view_state.reverse_fn_order, "Reverse function order (deferred)");
+    ui.checkbox(&mut view_state.view_config.reverse_fn_order, "Reverse function order (deferred)");
     ui.separator();
 }

src/views/data_diff.rs

@@ -1,20 +1,20 @@
 use std::{cmp::min, default::Default, mem::take};
 
-use egui::{text::LayoutJob, Color32, Label, Sense};
-use egui_extras::{Size, StripBuilder, TableBuilder};
+use egui::{text::LayoutJob, Align, Label, Layout, Sense, Vec2};
+use egui_extras::{Column, TableBuilder};
 use time::format_description;
 
 use crate::{
-    app::{View, ViewConfig, ViewState},
+    app::{SymbolReference, View, ViewConfig, ViewState},
     jobs::Job,
     obj::{ObjDataDiff, ObjDataDiffKind, ObjInfo, ObjSection},
-    views::{write_text, COLOR_RED},
+    views::write_text,
 };
 
 const BYTES_PER_ROW: usize = 16;
 
-fn find_section<'a>(obj: &'a ObjInfo, section_name: &str) -> Option<&'a ObjSection> {
-    obj.sections.iter().find(|s| s.name == section_name)
+fn find_section<'a>(obj: &'a ObjInfo, selected_symbol: &SymbolReference) -> Option<&'a ObjSection> {
+    obj.sections.iter().find(|section| section.name == selected_symbol.section_name)
 }
 
 fn data_row_ui(ui: &mut egui::Ui, address: usize, diffs: &[ObjDataDiff], config: &ViewConfig) {
@@ -24,17 +24,17 @@ fn data_row_ui(ui: &mut egui::Ui, address: usize, diffs: &[ObjDataDiff], config:
     let mut job = LayoutJob::default();
     write_text(
         format!("{address:08X}: ").as_str(),
-        Color32::GRAY,
+        config.text_color,
         &mut job,
         config.code_font.clone(),
     );
     let mut cur_addr = 0usize;
     for diff in diffs {
         let base_color = match diff.kind {
-            ObjDataDiffKind::None => Color32::GRAY,
-            ObjDataDiffKind::Replace => Color32::LIGHT_BLUE,
-            ObjDataDiffKind::Delete => COLOR_RED,
-            ObjDataDiffKind::Insert => Color32::GREEN,
+            ObjDataDiffKind::None => config.text_color,
+            ObjDataDiffKind::Replace => config.replace_color,
+            ObjDataDiffKind::Delete => config.delete_color,
+            ObjDataDiffKind::Insert => config.insert_color,
         };
         if diff.data.is_empty() {
             let mut str = "   ".repeat(diff.len);
@@ -58,15 +58,15 @@ fn data_row_ui(ui: &mut egui::Ui, address: usize, diffs: &[ObjDataDiff], config:
         let mut str = " ".to_string();
         str.push_str("   ".repeat(n).as_str());
         str.push_str(" ".repeat(n / 8).as_str());
-        write_text(str.as_str(), Color32::GRAY, &mut job, config.code_font.clone());
+        write_text(str.as_str(), config.text_color, &mut job, config.code_font.clone());
     }
-    write_text(" ", Color32::GRAY, &mut job, config.code_font.clone());
+    write_text(" ", config.text_color, &mut job, config.code_font.clone());
     for diff in diffs {
         let base_color = match diff.kind {
-            ObjDataDiffKind::None => Color32::GRAY,
-            ObjDataDiffKind::Replace => Color32::LIGHT_BLUE,
-            ObjDataDiffKind::Delete => COLOR_RED,
-            ObjDataDiffKind::Insert => Color32::GREEN,
+            ObjDataDiffKind::None => config.text_color,
+            ObjDataDiffKind::Replace => config.replace_color,
+            ObjDataDiffKind::Delete => config.delete_color,
+            ObjDataDiffKind::Insert => config.insert_color,
         };
         if diff.data.is_empty() {
             write_text(
@@ -132,11 +132,11 @@ fn data_table_ui(
     table: TableBuilder<'_>,
     left_obj: &ObjInfo,
     right_obj: &ObjInfo,
-    section_name: &str,
+    selected_symbol: &SymbolReference,
     config: &ViewConfig,
 ) -> Option<()> {
-    let left_section = find_section(left_obj, section_name)?;
-    let right_section = find_section(right_obj, section_name)?;
+    let left_section = find_section(left_obj, selected_symbol)?;
+    let right_section = find_section(right_obj, selected_symbol)?;
 
     let total_bytes = left_section.data_diff.iter().fold(0usize, |accum, item| accum + item.len);
     if total_bytes == 0 {
@@ -163,99 +163,96 @@ fn data_table_ui(
 
 pub fn data_diff_ui(ui: &mut egui::Ui, view_state: &mut ViewState) -> bool {
     let mut rebuild = false;
-    if let (Some(result), Some(selected_symbol)) = (&view_state.build, &view_state.selected_symbol)
-    {
-        StripBuilder::new(ui)
-            .size(Size::exact(20.0))
-            .size(Size::exact(40.0))
-            .size(Size::remainder())
-            .vertical(|mut strip| {
-                strip.strip(|builder| {
-                    builder.sizes(Size::remainder(), 2).horizontal(|mut strip| {
-                        strip.cell(|ui| {
-                            ui.horizontal(|ui| {
-                                if ui.button("Back").clicked() {
-                                    view_state.current_view = View::SymbolDiff;
-                                }
-                            });
-                        });
-                        strip.cell(|ui| {
-                            ui.horizontal(|ui| {
-                                if ui.button("Build").clicked() {
-                                    rebuild = true;
-                                }
-                                ui.scope(|ui| {
-                                    ui.style_mut().override_text_style =
-                                        Some(egui::TextStyle::Monospace);
-                                    ui.style_mut().wrap = Some(false);
-                                    if view_state
-                                        .jobs
-                                        .iter()
-                                        .any(|job| job.job_type == Job::ObjDiff)
-                                    {
-                                        ui.label("Building...");
-                                    } else {
-                                        ui.label("Last built:");
-                                        let format =
-                                            format_description::parse("[hour]:[minute]:[second]")
-                                                .unwrap();
-                                        ui.label(
-                                            result
-                                                .time
-                                                .to_offset(view_state.utc_offset)
-                                                .format(&format)
-                                                .unwrap(),
-                                        );
-                                    }
-                                });
-                            });
-                        });
-                    });
-                });
-                strip.strip(|builder| {
-                    builder.sizes(Size::remainder(), 2).horizontal(|mut strip| {
-                        strip.cell(|ui| {
-                            ui.scope(|ui| {
-                                ui.style_mut().override_text_style =
-                                    Some(egui::TextStyle::Monospace);
-                                ui.style_mut().wrap = Some(false);
-                                ui.colored_label(Color32::WHITE, selected_symbol);
-                                ui.label("Diff target:");
-                                ui.separator();
-                            });
-                        });
-                        strip.cell(|ui| {
-                            ui.scope(|ui| {
-                                ui.style_mut().override_text_style =
-                                    Some(egui::TextStyle::Monospace);
-                                ui.style_mut().wrap = Some(false);
-                                ui.label("");
-                                ui.label("Diff base:");
-                                ui.separator();
-                            });
-                        });
-                    });
-                });
-                strip.cell(|ui| {
-                    if let (Some(left_obj), Some(right_obj)) =
-                        (&result.first_obj, &result.second_obj)
-                    {
-                        let table = TableBuilder::new(ui)
-                            .striped(false)
-                            .cell_layout(egui::Layout::left_to_right(egui::Align::Min))
-                            .column(Size::relative(0.5))
-                            .column(Size::relative(0.5))
-                            .resizable(false);
-                        data_table_ui(
-                            table,
-                            left_obj,
-                            right_obj,
-                            selected_symbol,
-                            &view_state.view_config,
-                        );
+    let (Some(result), Some(selected_symbol)) = (&view_state.build, &view_state.selected_symbol)
+    else {
+        return rebuild;
+    };
+
+    // Header
+    let available_width = ui.available_width();
+    let column_width = available_width / 2.0;
+    ui.allocate_ui_with_layout(
+        Vec2 { x: available_width, y: 100.0 },
+        Layout::left_to_right(Align::Min),
+        |ui| {
+            // Left column
+            ui.allocate_ui_with_layout(
+                Vec2 { x: column_width, y: 100.0 },
+                Layout::top_down(Align::Min),
+                |ui| {
+                    ui.set_width(column_width);
+
+                    if ui.button("Back").clicked() {
+                        view_state.current_view = View::SymbolDiff;
                     }
-                });
-            });
+
+                    ui.scope(|ui| {
+                        ui.style_mut().override_text_style = Some(egui::TextStyle::Monospace);
+                        ui.style_mut().wrap = Some(false);
+                        ui.colored_label(
+                            view_state.view_config.highlight_color,
+                            &selected_symbol.symbol_name,
+                        );
+                        ui.label("Diff target:");
+                    });
+                },
+            );
+
+            // Right column
+            ui.allocate_ui_with_layout(
+                Vec2 { x: column_width, y: 100.0 },
+                Layout::top_down(Align::Min),
+                |ui| {
+                    ui.set_width(column_width);
+
+                    ui.horizontal(|ui| {
+                        if ui.button("Build").clicked() {
+                            rebuild = true;
+                        }
+                        ui.scope(|ui| {
+                            ui.style_mut().override_text_style = Some(egui::TextStyle::Monospace);
+                            ui.style_mut().wrap = Some(false);
+                            if view_state.jobs.iter().any(|job| job.job_type == Job::ObjDiff) {
+                                ui.label("Building...");
+                            } else {
+                                ui.label("Last built:");
+                                let format =
+                                    format_description::parse("[hour]:[minute]:[second]").unwrap();
+                                ui.label(
+                                    result
+                                        .time
+                                        .to_offset(view_state.utc_offset)
+                                        .format(&format)
+                                        .unwrap(),
+                                );
+                            }
+                        });
+                    });
+
+                    ui.scope(|ui| {
+                        ui.style_mut().override_text_style = Some(egui::TextStyle::Monospace);
+                        ui.style_mut().wrap = Some(false);
+                        ui.label("");
+                        ui.label("Diff base:");
+                    });
+                },
+            );
+        },
+    );
+    ui.separator();
+
+    // Table
+    if let (Some(left_obj), Some(right_obj)) = (&result.first_obj, &result.second_obj) {
+        let available_height = ui.available_height();
+        let table = TableBuilder::new(ui)
+            .striped(false)
+            .cell_layout(Layout::left_to_right(Align::Min))
+            .columns(Column::exact(column_width).clip(true), 2)
+            .resizable(false)
+            .auto_shrink([false, false])
+            .min_scrolled_height(available_height);
+        data_table_ui(table, left_obj, right_obj, selected_symbol, &view_state.view_config);
     }
+
     rebuild
 }