ci: Re-enable cargo release

* Update build.yaml

* Update build.yaml

.github/workflows/build.yaml

@@ -28,7 +28,7 @@ jobs:
           sudo apt-get update
           sudo apt-get -y install libgtk-3-dev
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup Rust toolchain
         uses: dtolnay/rust-toolchain@stable
         with:
@@ -47,7 +47,7 @@ jobs:
       RUSTFLAGS: -D warnings
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup Rust toolchain
         # We use nightly options in rustfmt.toml
         uses: dtolnay/rust-toolchain@nightly
@@ -62,12 +62,12 @@ jobs:
     strategy:
       matrix:
         checks:
-          - advisories
+          # - advisories
           - bans licenses sources
     # Prevent new advisories from failing CI
     continue-on-error: ${{ matrix.checks == 'advisories' }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: EmbarkStudios/cargo-deny-action@v2
         with:
           command: check ${{ matrix.checks }}
@@ -86,7 +86,7 @@ jobs:
           sudo apt-get update
           sudo apt-get -y install libgtk-3-dev
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup Rust toolchain
         uses: dtolnay/rust-toolchain@stable
       - name: Cache Rust workspace
@@ -145,10 +145,10 @@ jobs:
     runs-on: ${{ matrix.platform }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install uv
         if: matrix.build == 'zigbuild'
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@v7
       - name: Install cargo-zigbuild
         if: matrix.build == 'zigbuild'
         run: |
@@ -167,7 +167,7 @@ jobs:
           cargo ${{ matrix.build }} --profile ${{ env.BUILD_PROFILE }} --target ${{ matrix.target }}
           --bin ${{ env.CARGO_BIN_NAME }} --features ${{ matrix.features }}
       - name: Upload artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: ${{ env.CARGO_BIN_NAME }}-${{ matrix.name }}
           path: |
@@ -213,10 +213,10 @@ jobs:
           sudo apt-get update
           sudo apt-get -y install ${{ matrix.packages }}
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install uv
         if: matrix.build == 'zigbuild'
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@v7
       - name: Install cargo-zigbuild
         if: matrix.build == 'zigbuild'
         run: |
@@ -235,7 +235,7 @@ jobs:
           cargo ${{ matrix.build }} --profile ${{ env.BUILD_PROFILE }} --target ${{ matrix.target }}
           --bin ${{ env.CARGO_BIN_NAME }} --features ${{ matrix.features }}
       - name: Upload artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: ${{ env.CARGO_BIN_NAME }}-${{ matrix.name }}
           path: |
@@ -248,7 +248,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup Rust toolchain
         uses: dtolnay/rust-toolchain@nightly
         with:
@@ -256,7 +256,7 @@ jobs:
       - name: Cache Rust workspace
         uses: Swatinem/rust-cache@v2
       - name: Setup Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6.4.0
         with:
           node-version: lts/*
       - name: Install dependencies
@@ -264,7 +264,7 @@ jobs:
       - name: Build
         run: npm -C objdiff-wasm run build
       - name: Upload artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: wasm
           path: objdiff-wasm/dist/
@@ -277,7 +277,7 @@ jobs:
     needs: [ build-cli, build-gui, build-wasm ]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Check git tag against package versions
         shell: bash
         run: |
@@ -340,12 +340,11 @@ jobs:
 
   release-cargo:
     name: Release (Cargo)
-    if: 'false' # TODO re-enable when all dependencies are published
     runs-on: ubuntu-latest
     needs: [ check-version ]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup Rust toolchain
         uses: dtolnay/rust-toolchain@stable
       - name: Publish
@@ -360,9 +359,9 @@ jobs:
     needs: [ check-version ]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6.4.0
         with:
           node-version: lts/*
           registry-url: 'https://registry.npmjs.org'

Cargo.toml

@@ -14,7 +14,7 @@ default-members = [
 resolver = "3"
 
 [workspace.package]
-version = "3.5.0"
+version = "3.7.3"
 authors = ["Luke Street <luke@street.dev>"]
 edition = "2024"
 license = "MIT OR Apache-2.0"

deny.toml

@@ -75,8 +75,13 @@ ignore = [
     #{ crate = "a-crate-that-is-yanked@0.1.1", reason = "you can specify why you are ignoring the yanked crate" },
     { id = "RUSTSEC-2024-0436", reason = "Unmaintained paste crate is an indirect dependency" },
     { id = "RUSTSEC-2025-0052", reason = "Unmaintained async-std crate is an indirect dependency" },
-    { id = "RUSTSEC-2025-0119", reason = "Unmaintained number_prefix crate is an indirect dependency" },
     { id = "RUSTSEC-2025-0134", reason = "Unmaintained rustls-pemfile crate is an indirect dependency" },
+    { id = "RUSTSEC-2026-0098", reason = "Build-time objdiff-wasm wit-deps dependency still uses reqwest 0.11; latest wit-deps has no safe upgrade path" },
+    { id = "RUSTSEC-2026-0099", reason = "Build-time objdiff-wasm wit-deps dependency still uses reqwest 0.11; latest wit-deps has no safe upgrade path" },
+    { id = "RUSTSEC-2026-0104", reason = "Build-time objdiff-wasm wit-deps dependency still uses reqwest 0.11; latest wit-deps has no safe upgrade path" },
+    { id = "RUSTSEC-2026-0192", reason = "Unmaintained ttf-parser is an egui 0.33 indirect dependency; egui 0.35 requires raising MSRV from 1.88 to 1.92" },
+    { id = "RUSTSEC-2026-0194", reason = "Build-time wayland-scanner dependency parses vendored protocol XML; no newer stable wayland-scanner release is available" },
+    { id = "RUSTSEC-2026-0195", reason = "Build-time wayland-scanner dependency parses vendored protocol XML; no newer stable wayland-scanner release is available" },
 ]
 # If this is true, then cargo deny will use the git executable to fetch advisory database.
 # If this is false, then it uses a built-in git library.
@@ -244,8 +249,6 @@ allow-git = []
 [sources.allow-org]
 # github.com organizations to allow git sources for
 github = [
-    "encounter",
-    "gimli-rs",  # gimli
 ]
 # gitlab.com organizations to allow git sources for
 gitlab = []

objdiff-cli/Cargo.toml

@@ -20,7 +20,7 @@ enable-ansi-support = "0.3"
 memmap2 = "0.9"
 objdiff-core = { path = "../objdiff-core", features = ["all"] }
 prost = "0.14"
-ratatui = "0.29"
+ratatui = "0.30"
 rayon = "1.11"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"

objdiff-cli/src/cmd/diff.rs

@@ -1,4 +1,6 @@
+#![allow(unused)] // TODO
 use std::{
+    collections::BTreeMap,
     io::stdout,
     mem,
     sync::{
@@ -19,6 +21,7 @@ use crossterm::{
     },
 };
 use objdiff_core::{
+    bindings::diff::DiffResult,
     build::{
         BuildConfig, BuildStatus,
         watcher::{Watcher, create_watcher},
@@ -28,7 +31,7 @@ use objdiff_core::{
         build_globset,
         path::{check_path_buf, platform_path, platform_path_serde_option},
     },
-    diff::{DiffObjConfig, MappingConfig, ObjectDiff},
+    diff::{self, DiffObjConfig, DiffSide, MappingConfig, ObjectDiff},
     jobs::{
         Job, JobQueue, JobResult,
         objdiff::{ObjDiffConfig, start_build},
@@ -40,7 +43,10 @@ use typed_path::{Utf8PlatformPath, Utf8PlatformPathBuf};
 
 use crate::{
     cmd::apply_config_args,
-    util::term::crossterm_panic_handler,
+    util::{
+        output::{OutputFormat, write_output},
+        term::crossterm_panic_handler,
+    },
     views::{EventControlFlow, EventResult, UiView, function_diff::FunctionDiffUi},
 };
 
@@ -60,6 +66,12 @@ pub struct Args {
     #[argp(option, short = 'u')]
     /// Unit name within project
     unit: Option<String>,
+    #[argp(option, short = 'o', from_str_fn(platform_path))]
+    /// Output file (one-shot mode) ("-" for stdout)
+    output: Option<Utf8PlatformPathBuf>,
+    #[argp(option)]
+    /// Output format (json, json-pretty, proto) (default: json)
+    format: Option<String>,
     #[argp(positional)]
     /// Function symbol to diff
     symbol: Option<String>,
@@ -69,11 +81,13 @@ pub struct Args {
 }
 
 pub fn run(args: Args) -> Result<()> {
-    let (target_path, base_path, project_config, unit_options) =
+    let (target_path, base_path, project_config, unit_options, symbol_mappings) =
         match (&args.target, &args.base, &args.project, &args.unit) {
             (Some(_), Some(_), None, None)
             | (Some(_), None, None, None)
-            | (None, Some(_), None, None) => (args.target.clone(), args.base.clone(), None, None),
+            | (None, Some(_), None, None) => {
+                (args.target.clone(), args.base.clone(), None, None, BTreeMap::new())
+            }
             (None, None, p, u) => {
                 let project = match p {
                     Some(project) => project.clone(),
@@ -85,7 +99,7 @@ pub fn run(args: Args) -> Result<()> {
                 let Some((project_config, project_config_info)) =
                     objdiff_core::config::try_project_config(project.as_ref())
                 else {
-                    bail!("Project config not found in {}", &project)
+                    bail!("Project config not found in {}", project)
                 };
                 let project_config = project_config.with_context(|| {
                     format!("Reading project config {}", project_config_info.path.display())
@@ -153,18 +167,65 @@ pub fn run(args: Args) -> Result<()> {
                 let unit_options = units.get(unit_idx).and_then(|u| u.options().cloned());
                 let target_path = object.target_path.clone();
                 let base_path = object.base_path.clone();
-                (target_path, base_path, Some(project_config), unit_options)
+                let symbol_mappings = object.symbol_mappings.clone();
+                (target_path, base_path, Some(project_config), unit_options, symbol_mappings)
             }
             _ => bail!("Either target and base or project and unit must be specified"),
         };
 
-    run_interactive(args, target_path, base_path, project_config, unit_options)
+    if let Some(output) = &args.output {
+        run_oneshot(
+            &args,
+            output,
+            target_path.as_deref(),
+            base_path.as_deref(),
+            project_config.as_ref(),
+            unit_options,
+            &symbol_mappings,
+        )
+    } else {
+        run_interactive(args, target_path, base_path, project_config, unit_options, symbol_mappings)
+    }
+}
+
+fn run_oneshot(
+    args: &Args,
+    output: &Utf8PlatformPath,
+    target_path: Option<&Utf8PlatformPath>,
+    base_path: Option<&Utf8PlatformPath>,
+    project_config: Option<&ProjectConfig>,
+    unit_options: Option<ProjectOptions>,
+    symbol_mappings: &BTreeMap<String, String>,
+) -> Result<()> {
+    let output_format = OutputFormat::from_option(args.format.as_deref())?;
+    let (diff_config, mapping_config) =
+        build_config_from_args(args, project_config, unit_options.as_ref(), symbol_mappings)?;
+    let target = target_path
+        .map(|p| {
+            obj::read::read(p.as_ref(), &diff_config, DiffSide::Target)
+                .with_context(|| format!("Loading {p}"))
+        })
+        .transpose()?;
+    let base = base_path
+        .map(|p| {
+            obj::read::read(p.as_ref(), &diff_config, DiffSide::Base)
+                .with_context(|| format!("Loading {p}"))
+        })
+        .transpose()?;
+    let result =
+        diff::diff_objs(target.as_ref(), base.as_ref(), None, &diff_config, &mapping_config)?;
+    let left = target.as_ref().zip(result.left.as_ref());
+    let right = base.as_ref().zip(result.right.as_ref());
+    let diff_result = DiffResult::new(left, right, &diff_config)?;
+    write_output(&diff_result, Some(output), output_format)?;
+    Ok(())
 }
 
 fn build_config_from_args(
     args: &Args,
     project_config: Option<&ProjectConfig>,
     unit_options: Option<&ProjectOptions>,
+    symbol_mappings: &BTreeMap<String, String>,
 ) -> Result<(DiffObjConfig, MappingConfig)> {
     let mut diff_config = DiffObjConfig::default();
     if let Some(options) = project_config.and_then(|config| config.options.as_ref()) {
@@ -174,7 +235,11 @@ fn build_config_from_args(
         apply_project_options(&mut diff_config, options)?;
     }
     apply_config_args(&mut diff_config, &args.config)?;
-    Ok((diff_config, MappingConfig::default()))
+    Ok((diff_config, MappingConfig {
+        mappings: symbol_mappings.clone(),
+        selecting_left: None,
+        selecting_right: None,
+    }))
 }
 
 pub struct AppState {
@@ -235,6 +300,7 @@ pub struct ObjectConfig {
     pub base_path: Option<Utf8PlatformPathBuf>,
     pub metadata: ProjectObjectMetadata,
     pub complete: Option<bool>,
+    pub symbol_mappings: BTreeMap<String, String>,
 }
 
 impl ObjectConfig {
@@ -264,6 +330,7 @@ impl ObjectConfig {
             base_path,
             metadata: object.metadata.clone().unwrap_or_default(),
             complete: object.complete(),
+            symbol_mappings: object.symbol_mappings.clone().unwrap_or_default(),
         }
     }
 }
@@ -314,12 +381,17 @@ fn run_interactive(
     base_path: Option<Utf8PlatformPathBuf>,
     project_config: Option<ProjectConfig>,
     unit_options: Option<ProjectOptions>,
+    symbol_mappings: BTreeMap<String, String>,
 ) -> Result<()> {
     let Some(symbol_name) = &args.symbol else { bail!("Interactive mode requires a symbol name") };
     let time_format = time::format_description::parse_borrowed::<2>("[hour]:[minute]:[second]")
         .context("Failed to parse time format")?;
-    let (diff_obj_config, mapping_config) =
+    let (diff_obj_config, mapping_config) = build_config_from_args(
-        build_config_from_args(&args, project_config.as_ref(), unit_options.as_ref())?;
+        &args,
+        project_config.as_ref(),
+        unit_options.as_ref(),
+        &symbol_mappings,
+    )?;
     let mut state = AppState {
         jobs: Default::default(),
         waker: Default::default(),

objdiff-cli/src/cmd/report.rs

@@ -210,7 +210,11 @@ fn report_object(
         }
         _ => {}
     }
-    let mapping_config = diff::MappingConfig::default();
+    let mapping_config = diff::MappingConfig {
+        mappings: object.symbol_mappings.clone(),
+        selecting_left: None,
+        selecting_right: None,
+    };
     let target = object
         .target_path
         .as_ref()

objdiff-cli/src/views/function_diff.rs

@@ -1,3 +1,4 @@
+#![allow(unused)] // TODO
 use core::cmp::Ordering;
 
 use anyhow::Result;

objdiff-cli/src/views/mod.rs

@@ -1,3 +1,4 @@
+#![allow(unused)] // TODO
 use anyhow::Result;
 use crossterm::event::Event;
 use ratatui::Frame;

objdiff-core/Cargo.toml

@@ -128,16 +128,16 @@ features = ["all"]
 anyhow = { version = "1.0", default-features = false }
 filetime = { version = "0.2", optional = true }
 flagset = { version = "0.4", default-features = false, optional = true }
-itertools = { version = "0.14", default-features = false, features = ["use_alloc"] }
+itertools = { version = "0.15", default-features = false, features = ["use_alloc"] }
 log = { version = "0.4", default-features = false, optional = true }
 memmap2 = { version = "0.9", optional = true }
 num-traits = { version = "0.2", default-features = false, optional = true }
-object = { version = "0.37", default-features = false, features = ["read_core", "elf", "coff"] }
+object = { version = "0.39.1", default-features = false, features = ["read_core", "elf", "coff"] }
-pbjson = { version = "0.8", default-features = false, optional = true }
+pbjson = { version = "0.9", default-features = false, optional = true }
 prost = { version = "0.14", default-features = false, features = ["derive"], optional = true }
 regex = { version = "1.12", default-features = false, features = [], optional = true }
 serde = { version = "1.0", default-features = false, features = ["derive"], optional = true }
-similar = { git = "https://github.com/encounter/similar.git", branch = "no_std", default-features = false, features = ["hashbrown"], optional = true }
+similar = { version = "3.1", default-features = false, features = ["hashbrown"], optional = true }
 typed-path = { version = "0.12", default-features = false, optional = true }
 
 # config
@@ -146,7 +146,7 @@ semver = { version = "1.0", default-features = false, optional = true }
 serde_json = { version = "1.0", default-features = false, features = ["alloc"], optional = true }
 
 # dwarf
-gimli = { git = "https://github.com/gimli-rs/gimli", rev = "7335f00e7c39fd501511584fefb0ba974117c950", default-features = false, features = ["read"], optional = true }
+gimli = { version =  "0.34.0", default-features = false, features = ["read"], optional = true }
 typed-arena = { version = "2.0", default-features = false, optional = true }
 
 # ppc
@@ -155,7 +155,7 @@ powerpc = { version = "0.4", optional = true }
 rlwinmdec = { version = "1.1", optional = true }
 
 # mips
-rabbitizer = { version = "2.0.0-alpha.7", default-features = false, features = ["all_extensions"], optional = true }
+rabbitizer = { version = "2.0.0-alpha.9", default-features = false, features = ["all_extensions"], optional = true }
 
 # x86
 iced-x86 = { version = "1.21", default-features = false, features = ["decoder", "intel", "gas", "masm", "nasm", "exhaustive_enums", "no_std"], optional = true }
@@ -187,17 +187,17 @@ winapi = { version = "0.3", optional = true, features = ["winbase"] }
 
 # For Linux static binaries, use rustls
 [target.'cfg(target_os = "linux")'.dependencies]
-reqwest = { version = "0.12", default-features = false, features = ["blocking", "json", "multipart", "rustls-tls"], optional = true }
+reqwest = { version = "0.13", default-features = false, features = ["blocking", "json", "multipart", "rustls"], optional = true }
-self_update = { version = "0.42", default-features = false, features = ["rustls"], optional = true }
+self_update = { version = "1.0.0-rc.3", default-features = false, features = ["reqwest", "rustls", "github"], optional = true }
 
 # For all other platforms, use native TLS
 [target.'cfg(not(target_os = "linux"))'.dependencies]
-reqwest = { version = "0.12", default-features = false, features = ["blocking", "json", "multipart", "default-tls"], optional = true }
+reqwest = { version = "0.13", default-features = false, features = ["blocking", "json", "multipart", "default-tls"], optional = true }
-self_update = { version = "0.42", optional = true }
+self_update = { version = "1.0.0-rc.3", default-features = false, features = ["reqwest", "native-tls", "github"], optional = true }
 
 [build-dependencies]
 heck = { version = "0.5", optional = true }
-pbjson-build = { version = "0.8", optional = true }
+pbjson-build = { version = "0.9", optional = true }
 prettyplease = { version = "0.2", optional = true }
 proc-macro2 = { version = "1.0", optional = true }
 prost-build = { version = "0.14", optional = true }

objdiff-core/config-schema.json

@@ -117,6 +117,51 @@
       "name": "Combine text sections",
       "description": "Combines all text sections into one."
     },
+    {
+      "id": "preferredStringEncoding",
+      "type": "choice",
+      "default": "auto",
+      "name": "Preferred string encoding",
+      "description": "Which encoding to use when diffing string literals used in functions.",
+      "items": [
+        {
+          "value": "auto",
+          "name": "Auto"
+        },
+        {
+          "value": "ascii",
+          "name": "ASCII"
+        },
+        {
+          "value": "utf_8",
+          "name": "UTF-8"
+        },
+        {
+          "value": "shift_jis",
+          "name": "Shift JIS"
+        },
+        {
+          "value": "windows_1252",
+          "name": "Windows-1252"
+        },
+        {
+          "value": "euc_jp",
+          "name": "EUC-JP"
+        },
+        {
+          "value": "big5",
+          "name": "Big5"
+        },
+        {
+          "value": "utf_16be",
+          "name": "UTF-16BE"
+        },
+        {
+          "value": "utf_16le",
+          "name": "UTF-16LE"
+        }
+      ]
+    },
     {
       "id": "arm.archVersion",
       "type": "choice",
@@ -300,6 +345,13 @@
       "name": "Register '$' prefix",
       "description": "Display MIPS register names with a '$' prefix."
     },
+    {
+      "id": "mips.prodgSnAsInvertedRegs",
+      "type": "boolean",
+      "default": false,
+      "name": "ProDG SN AS VU register order",
+      "description": "Changes the register order for specific R5900EE instructions to match the syntax used by the SN AS from ProDG (-snas flag)."
+    },
     {
       "id": "ppc.calculatePoolRelocations",
       "type": "boolean",
@@ -338,6 +390,7 @@
       "id": "general",
       "name": "General",
       "properties": [
+        "preferredStringEncoding",
         "functionRelocDiffs",
         "demangler",
         "showSymbolSizes",
@@ -363,7 +416,7 @@
     {
       "id": "mips",
       "name": "MIPS",
-      "properties": ["mips.abi", "mips.instrCategory", "mips.registerPrefix"]
+      "properties": ["mips.abi", "mips.instrCategory", "mips.registerPrefix", "mips.prodgSnAsInvertedRegs"]
     },
     {
       "id": "ppc",

objdiff-core/protos/diff.proto

@@ -0,0 +1,171 @@
+syntax = "proto3";
+
+package objdiff.diff;
+
+// Top-level diff result containing left and right object diffs
+message DiffResult {
+  optional DiffObject left = 1;
+  optional DiffObject right = 2;
+}
+
+// Diff information for a single object file
+message DiffObject {
+  repeated DiffSection sections = 1;
+  repeated DiffSymbol symbols = 2;
+}
+
+// Diff information for a section
+message DiffSection {
+  string name = 1;
+  DiffSectionKind kind = 2;
+  uint64 size = 3;
+  uint64 address = 4;
+  optional float match_percent = 5;
+  repeated DiffDataSegment data_diff = 6;
+  repeated DiffDataRelocation reloc_diff = 7;
+}
+
+enum DiffSectionKind {
+  SECTION_UNKNOWN = 0;
+  SECTION_CODE = 1;
+  SECTION_DATA = 2;
+  SECTION_BSS = 3;
+  SECTION_COMMON = 4;
+}
+
+// Symbol with diff information
+message DiffSymbol {
+  string name = 1;
+  optional string demangled_name = 2;
+  uint64 address = 3;
+  uint64 size = 4;
+  DiffSymbolFlags flags = 5;
+  DiffSymbolKind kind = 10;
+  // The symbol index in the _other_ object that this symbol was diffed against
+  optional uint32 target_symbol = 6;
+  optional float match_percent = 7;
+  // Instruction diff rows (for code symbols)
+  repeated DiffInstructionRow instructions = 8;
+  // Data diff (for data symbols)
+  repeated DiffDataSegment data_diff = 9;
+}
+
+enum DiffSymbolKind {
+  SYMBOL_UNKNOWN = 0;
+  SYMBOL_FUNCTION = 1;
+  SYMBOL_OBJECT = 2;
+  SYMBOL_SECTION = 3;
+}
+
+// Symbol flags
+message DiffSymbolFlags {
+  bool global = 1;
+  bool local = 2;
+  bool weak = 3;
+  bool common = 4;
+  bool hidden = 5;
+  bool ignored = 6;
+  bool size_inferred = 7;
+}
+
+// A single instruction diff row
+message DiffInstructionRow {
+  DiffKind diff_kind = 1;
+  optional DiffInstruction instruction = 2;
+  repeated DiffInstructionArgDiff arg_diff = 3;
+}
+
+// Parsed instruction information
+message DiffInstruction {
+  uint64 address = 1;
+  uint32 size = 2;
+  // Formatted instruction string
+  string formatted = 3;
+  // Formatted instruction parts
+  repeated DiffInstructionPart parts = 4;
+  // Relocation information (if present)
+  optional DiffRelocation relocation = 5;
+  // Branch destination address
+  optional uint64 branch_dest = 6;
+  // Source line number (if present)
+  optional uint32 line_number = 7;
+}
+
+// An instruction part
+message DiffInstructionPart {
+  oneof part {
+    // Basic text (whitespace, punctuation, etc.)
+    string basic = 1;
+    // Opcode/mnemonic
+    DiffOpcode opcode = 2;
+    // Argument
+    DiffInstructionArg arg = 3;
+    // Separator between arguments (comma)
+    bool separator = 4;
+  }
+}
+
+message DiffOpcode {
+  // Mnemonic string
+  string mnemonic = 1;
+  // Base opcode ID
+  uint32 opcode = 2;
+}
+
+// An instruction argument
+message DiffInstructionArg {
+  oneof arg {
+    // Signed immediate value
+    sint64 signed = 1;
+    // Unsigned immediate value
+    uint64 unsigned = 2;
+    // Opaque string value (register names, etc.)
+    string opaque = 3;
+    // Relocation
+    bool reloc = 4;
+    // Branch destination address
+    uint64 branch_dest = 5;
+  }
+}
+
+// Relocation information
+message DiffRelocation {
+  uint32 type = 1;
+  string type_name = 2;
+  uint32 target_symbol = 3;
+  int64 addend = 4;
+}
+
+// Argument diff information
+message DiffInstructionArgDiff {
+  // If set, this argument differs from the other side.
+  // The value is a rotating index for coloring.
+  optional uint32 diff_index = 1;
+}
+
+// Diff kind for instructions and data
+enum DiffKind {
+  DIFF_NONE = 0;
+  DIFF_REPLACE = 1;
+  DIFF_DELETE = 2;
+  DIFF_INSERT = 3;
+  DIFF_OP_MISMATCH = 4;
+  DIFF_ARG_MISMATCH = 5;
+}
+
+// Data diff segment
+message DiffDataSegment {
+  DiffKind kind = 1;
+  bytes data = 2;
+  // Size may be larger than data length for BSS
+  uint64 size = 3;
+}
+
+// Data relocation diff
+message DiffDataRelocation {
+  DiffRelocation relocation = 1;
+  DiffKind kind = 2;
+  // Address range this relocation covers
+  uint64 start = 3;
+  uint64 end = 4;
+}

objdiff-core/src/arch/arm.rs

@@ -162,7 +162,7 @@ impl ArchArm {
 }
 
 impl Arch for ArchArm {
-    fn post_init(&mut self, sections: &[Section], symbols: &[Symbol]) {
+    fn post_init(&mut self, sections: &[Section], symbols: &[Symbol], _symbol_indices: &[usize]) {
         self.disasm_modes = Self::get_mapping_symbols(sections, symbols);
     }
 
@@ -183,7 +183,7 @@ impl Arch for ArchArm {
         let mapping_symbols = self
             .disasm_modes
             .get(&section_index)
-            .map(|x| x.as_slice())
+            .map(|x| if x.is_empty() { &fallback_mappings } else { x.as_slice() })
             .unwrap_or(&fallback_mappings);
         let first_mapping_idx = mapping_symbols
             .binary_search_by_key(&start_addr, |x| x.address)
@@ -224,7 +224,9 @@ impl Arch for ArchArm {
             }
 
             // Check how many bytes we can/should read
-            let num_code_bytes = if data.len() >= 4 {
+            let bytes_until_next_mapping =
+                next_mapping.map(|m| (m.address - address) as usize).unwrap_or(usize::MAX);
+            let num_code_bytes = if data.len() >= 4 && bytes_until_next_mapping >= 4 {
                 if mode == unarm::ParseMode::Data && address & 3 != 0 {
                     // 32-bit .word value should be aligned on a 4-byte boundary, otherwise use .hword
                     2
@@ -341,6 +343,15 @@ impl Arch for ArchArm {
             // Handle ELF implicit relocations
             object::RelocationFlags::Elf { r_type } => {
                 if relocation.has_implicit_addend() {
+                    // R_ARM_V4BX marks a `bx` instruction so the linker can optionally
+                    // rewrite it for ARMv4 interworking. Drops the addend since it's meaningless.
+                    if r_type == elf::R_ARM_V4BX {
+                        return Ok(Some(RelocationOverride {
+                            target: RelocationOverrideTarget::Skip,
+                            addend: 0,
+                        }));
+                    }
+
                     let section_data = section.data()?;
                     let address = address as usize;
                     let addend = match r_type {
@@ -350,7 +361,7 @@ impl Arch for ArchArm {
                         | elf::R_ARM_CALL
                         | elf::R_ARM_JUMP24 => {
                             let data = section_data[address..address + 4].try_into()?;
-                            let addend = self.endianness.read_i32_bytes(data);
+                            let addend = self.endianness.read_i32(data);
                             let imm24 = addend & 0xffffff;
                             (imm24 << 2) << 8 >> 8
                         }
@@ -358,18 +369,34 @@ impl Arch for ArchArm {
                         // Thumb calls
                         elf::R_ARM_THM_PC22 | elf::R_ARM_THM_XPC22 => {
                             let data = section_data[address..address + 2].try_into()?;
-                            let high = self.endianness.read_i16_bytes(data) as i32;
+                            let high = self.endianness.read_i16(data) as i32;
                             let data = section_data[address + 2..address + 4].try_into()?;
-                            let low = self.endianness.read_i16_bytes(data) as i32;
+                            let low = self.endianness.read_i16(data) as i32;
 
                             let imm22 = ((high & 0x7ff) << 11) | (low & 0x7ff);
                             (imm22 << 1) << 9 >> 9
                         }
 
+                        // Thumb unconditional branch (B, 11-bit offset)
+                        elf::R_ARM_THM_PC11 => {
+                            let data = section_data[address..address + 2].try_into()?;
+                            let insn = self.endianness.read_u16(data) as i32;
+                            let imm11 = insn & 0x7ff;
+                            (imm11 << 1) << 20 >> 20
+                        }
+
+                        // Thumb conditional branch (B<cond>, 8-bit offset)
+                        elf::R_ARM_THM_PC9 => {
+                            let data = section_data[address..address + 2].try_into()?;
+                            let insn = self.endianness.read_u16(data) as i32;
+                            let imm8 = insn & 0xff;
+                            (imm8 << 1) << 23 >> 23
+                        }
+
                         // Data
                         elf::R_ARM_ABS32 => {
                             let data = section_data[address..address + 4].try_into()?;
-                            self.endianness.read_i32_bytes(data)
+                            self.endianness.read_i32(data)
                         }
 
                         flags => bail!("Unsupported ARM implicit relocation {flags:?}"),
@@ -399,6 +426,9 @@ impl Arch for ArchArm {
                 elf::R_ARM_PC24 => Some("R_ARM_PC24"),
                 elf::R_ARM_XPC25 => Some("R_ARM_XPC25"),
                 elf::R_ARM_CALL => Some("R_ARM_CALL"),
+                elf::R_ARM_THM_PC11 => Some("R_ARM_THM_PC11"),
+                elf::R_ARM_THM_PC9 => Some("R_ARM_THM_PC9"),
+                elf::R_ARM_V4BX => Some("R_ARM_V4BX"),
                 _ => None,
             },
             _ => None,
@@ -418,6 +448,8 @@ impl Arch for ArchArm {
                 elf::R_ARM_PC24 => 4,
                 elf::R_ARM_XPC25 => 4,
                 elf::R_ARM_CALL => 4,
+                elf::R_ARM_THM_PC11 => 2,
+                elf::R_ARM_THM_PC9 => 2,
                 _ => 1,
             },
             _ => 1,
@@ -449,9 +481,13 @@ impl Arch for ArchArm {
         while next_address >= symbol.address + 2
             && let Some(data) = section.data_range(next_address - 2, 2)
             && data == [0u8; 2]
-            && section.relocation_at(next_address - 2, 2).is_none()
         {
             next_address -= 2;
+            if let Some(relocation) = section.relocation_at(next_address, 2) {
+                // Avoid cutting trailing relocations in half.
+                next_address += self.data_reloc_size(relocation.flags) as u64;
+                break;
+            }
         }
         Ok(next_address.saturating_sub(symbol.address))
     }
@@ -544,7 +580,9 @@ impl unarm::FormatIns for ArgsFormatter<'_> {
                 | RelocationFlags::Elf(elf::R_ARM_THM_PC22)
                 | RelocationFlags::Elf(elf::R_ARM_PC24)
                 | RelocationFlags::Elf(elf::R_ARM_XPC25)
-                | RelocationFlags::Elf(elf::R_ARM_CALL) => {
+                | RelocationFlags::Elf(elf::R_ARM_CALL)
+                | RelocationFlags::Elf(elf::R_ARM_THM_PC11)
+                | RelocationFlags::Elf(elf::R_ARM_THM_PC9) => {
                     return self.write(InstructionPart::reloc());
                 }
                 _ => {}

objdiff-core/src/arch/mips.rs

@@ -77,7 +77,7 @@ impl ArchMips {
             .and_then(|section| section.data().ok())
             .and_then(|data| data.get(0x14..0x18))
             .and_then(|s| s.try_into().ok())
-            .map(|bytes| endianness.read_i32_bytes(bytes))
+            .map(|bytes| endianness.read_i32(bytes))
             .unwrap_or(0);
 
         // Parse all relocations to pair R_MIPS_HI16 and R_MIPS_LO16. Since the instructions only
@@ -98,13 +98,13 @@ impl ArchMips {
                 match reloc.flags() {
                     object::RelocationFlags::Elf { r_type: elf::R_MIPS_HI16 } => {
                         let code = data[addr as usize..addr as usize + 4].try_into()?;
-                        let addend = ((endianness.read_u32_bytes(code) & 0x0000FFFF) << 16) as i32;
+                        let addend = ((endianness.read_u32(code) & 0x0000FFFF) << 16) as i32;
                         last_hi = Some(addr);
                         last_hi_addend = addend;
                     }
                     object::RelocationFlags::Elf { r_type: elf::R_MIPS_LO16 } => {
                         let code = data[addr as usize..addr as usize + 4].try_into()?;
-                        let addend = (endianness.read_u32_bytes(code) & 0x0000FFFF) as i16 as i32;
+                        let addend = (endianness.read_u32(code) & 0x0000FFFF) as i16 as i32;
                         let full_addend = (last_hi_addend + addend) as i64;
                         if let Some(hi_addr) = last_hi.take() {
                             addends.insert(hi_addr, full_addend);
@@ -188,6 +188,7 @@ impl ArchMips {
         rabbitizer::InstructionDisplayFlags::default()
             .with_unknown_instr_comment(false)
             .with_use_dollar(diff_config.mips_register_prefix)
+            .with_r5900ee_prodg_sn_as_inverted_regs(diff_config.mips_prodg_sn_as_inverted_regs)
     }
 
     fn parse_ins_ref(
@@ -197,7 +198,7 @@ impl ArchMips {
         diff_config: &DiffObjConfig,
     ) -> Result<rabbitizer::Instruction> {
         Ok(rabbitizer::Instruction::new(
-            self.endianness.read_u32_bytes(code.try_into()?),
+            self.endianness.read_u32(code.try_into()?),
             Vram::new(ins_ref.address as u32),
             self.instruction_flags(diff_config),
         ))
@@ -216,8 +217,8 @@ impl Arch for ArchMips {
         let instruction_flags = self.instruction_flags(diff_config);
         let mut ops = Vec::<InstructionRef>::with_capacity(code.len() / 4);
         let mut cur_addr = address as u32;
-        for chunk in code.chunks_exact(4) {
+        for chunk in code.as_chunks::<4>().0 {
-            let code = self.endianness.read_u32_bytes(chunk.try_into()?);
+            let code = self.endianness.read_u32(*chunk);
             let instruction =
                 rabbitizer::Instruction::new(code, Vram::new(cur_addr), instruction_flags);
             let opcode = instruction.opcode() as u16;
@@ -237,7 +238,8 @@ impl Arch for ArchMips {
         let instruction = self.parse_ins_ref(resolved.ins_ref, resolved.code, diff_config)?;
         let display_flags = self.instruction_display_flags(diff_config);
         let opcode = instruction.opcode();
-        cb(InstructionPart::opcode(opcode.name(), opcode as u16))?;
+        let mnemonic = instruction.mnemonic_display(&display_flags).to_string();
+        cb(InstructionPart::opcode(mnemonic, opcode as u16))?;
         push_args(&instruction, resolved.relocation, &display_flags, cb)?;
         Ok(())
     }
@@ -269,7 +271,7 @@ impl Arch for ArchMips {
                     let data = section.data()?;
                     let code = self
                         .endianness
-                        .read_u32_bytes(data[address as usize..address as usize + 4].try_into()?);
+                        .read_u32(data[address as usize..address as usize + 4].try_into()?);
                     let addend = match r_type {
                         elf::R_MIPS_32 => code as i64,
                         elf::R_MIPS_26 => ((code & 0x03FFFFFF) << 2) as i64,
@@ -366,7 +368,7 @@ impl Arch for ArchMips {
             && new_address >= symbol.address + 4
             && let Some(data) = section.data_range(new_address - 4, 4)
             && let instruction = rabbitizer::Instruction::new(
-                self.endianness.read_u32_bytes(data.try_into().unwrap()),
+                self.endianness.read_u32(data.try_into().unwrap()),
                 Vram::new((new_address - 4) as u32),
                 self.default_instruction_flags(),
             )

objdiff-core/src/arch/mod.rs

@@ -15,7 +15,7 @@ use object::Endian as _;
 
 use crate::{
     diff::{
-        DiffObjConfig, DiffSide,
+        ConfigEnum, DiffObjConfig, DiffSide, PreferredStringEncoding,
         display::{ContextItem, HoverItem, InstructionPart},
     },
     obj::{
@@ -42,15 +42,42 @@ pub mod x86;
 pub const OPCODE_INVALID: u16 = u16::MAX;
 pub const OPCODE_DATA: u16 = u16::MAX - 1;
 
-const SUPPORTED_ENCODINGS: [(&encoding_rs::Encoding, &str); 7] = [
+const SUPPORTED_ENCODINGS_WITH_NULL_TERM: [(&encoding_rs::Encoding, &str); 5] = [
     (encoding_rs::UTF_8, "UTF-8"),
     (encoding_rs::SHIFT_JIS, "Shift JIS"),
-    (encoding_rs::UTF_16BE, "UTF-16BE"),
-    (encoding_rs::UTF_16LE, "UTF-16LE"),
     (encoding_rs::WINDOWS_1252, "Windows-1252"),
     (encoding_rs::EUC_JP, "EUC-JP"),
     (encoding_rs::BIG5, "Big5"),
 ];
+const SUPPORTED_ENCODINGS_NO_NULL_TERM: [(&encoding_rs::Encoding, &str); 2] =
+    [(encoding_rs::UTF_16BE, "UTF-16BE"), (encoding_rs::UTF_16LE, "UTF-16LE")];
+
+#[derive(Debug, Clone, Default, PartialEq)]
+pub struct LiteralInfo {
+    pub literal: String,
+    pub label_override: Option<String>,
+    pub copy_string: Option<String>,
+    pub hidden: bool, // Only used when the user hasn't set a preferred string encoding
+    pub is_string: bool,
+}
+
+impl LiteralInfo {
+    pub fn hidden(&self, diff_config: Option<&DiffObjConfig>) -> bool {
+        let Some(diff_config) = diff_config else {
+            return self.hidden;
+        };
+        if !self.is_string {
+            return self.hidden;
+        }
+        if diff_config.preferred_string_encoding == PreferredStringEncoding::Auto {
+            return self.hidden;
+        }
+        let Some(ref label) = self.label_override else {
+            return self.hidden;
+        };
+        *label != diff_config.preferred_string_encoding.name()
+    }
+}
 
 /// Represents the type of data associated with an instruction
 #[derive(PartialEq)]
@@ -83,18 +110,14 @@ impl fmt::Display for DataType {
 impl DataType {
     pub fn display_labels(&self, endian: object::Endianness, bytes: &[u8]) -> Vec<String> {
         let mut strs = Vec::new();
-        for (literal, label_override) in self.display_literals(endian, bytes) {
+        for lit_info in self.display_literals(endian, bytes) {
-            let label = label_override.unwrap_or_else(|| self.to_string());
+            let label = lit_info.label_override.unwrap_or_else(|| self.to_string());
-            strs.push(format!("{label}: {literal:?}"))
+            strs.push(format!("{}: {:?}", label, lit_info.literal))
         }
         strs
     }
 
-    pub fn display_literals(
+    pub fn display_literals(&self, endian: object::Endianness, bytes: &[u8]) -> Vec<LiteralInfo> {
-        &self,
-        endian: object::Endianness,
-        bytes: &[u8],
-    ) -> Vec<(String, Option<String>)> {
         let mut strs = Vec::new();
         if self.required_len().is_some_and(|l| bytes.len() < l) {
             log::warn!(
@@ -118,58 +141,70 @@ impl DataType {
         match self {
             DataType::Int8 => {
                 let i = i8::from_ne_bytes(bytes.try_into().unwrap());
-                strs.push((format!("{i:#x}"), None));
+                strs.push(LiteralInfo { literal: format!("{i:#x}"), ..Default::default() });
 
                 if i < 0 {
-                    strs.push((format!("{:#x}", ReallySigned(i)), None));
+                    strs.push(LiteralInfo {
+                        literal: format!("{:#x}", ReallySigned(i)),
+                        ..Default::default()
+                    });
                 }
             }
             DataType::Int16 => {
-                let i = endian.read_i16_bytes(bytes.try_into().unwrap());
+                let i = endian.read_i16(bytes.try_into().unwrap());
-                strs.push((format!("{i:#x}"), None));
+                strs.push(LiteralInfo { literal: format!("{i:#x}"), ..Default::default() });
 
                 if i < 0 {
-                    strs.push((format!("{:#x}", ReallySigned(i)), None));
+                    strs.push(LiteralInfo {
+                        literal: format!("{:#x}", ReallySigned(i)),
+                        ..Default::default()
+                    });
                 }
             }
             DataType::Int32 => {
-                let i = endian.read_i32_bytes(bytes.try_into().unwrap());
+                let i = endian.read_i32(bytes.try_into().unwrap());
-                strs.push((format!("{i:#x}"), None));
+                strs.push(LiteralInfo { literal: format!("{i:#x}"), ..Default::default() });
 
                 if i < 0 {
-                    strs.push((format!("{:#x}", ReallySigned(i)), None));
+                    strs.push(LiteralInfo {
+                        literal: format!("{:#x}", ReallySigned(i)),
+                        ..Default::default()
+                    });
                 }
             }
             DataType::Int64 => {
-                let i = endian.read_i64_bytes(bytes.try_into().unwrap());
+                let i = endian.read_i64(bytes.try_into().unwrap());
-                strs.push((format!("{i:#x}"), None));
+                strs.push(LiteralInfo { literal: format!("{i:#x}"), ..Default::default() });
 
                 if i < 0 {
-                    strs.push((format!("{:#x}", ReallySigned(i)), None));
+                    strs.push(LiteralInfo {
+                        literal: format!("{:#x}", ReallySigned(i)),
+                        ..Default::default()
+                    });
                 }
             }
             DataType::Float => {
                 let bytes: [u8; 4] = bytes.try_into().unwrap();
-                strs.push((
+                strs.push(LiteralInfo {
-                    format!("{:?}f", match endian {
+                    literal: format!("{:?}f", match endian {
                         object::Endianness::Little => f32::from_le_bytes(bytes),
                         object::Endianness::Big => f32::from_be_bytes(bytes),
                     }),
-                    None,
+                    ..Default::default()
-                ));
+                });
             }
             DataType::Double => {
                 let bytes: [u8; 8] = bytes.try_into().unwrap();
-                strs.push((
+                strs.push(LiteralInfo {
-                    format!("{:?}", match endian {
+                    literal: format!("{:?}", match endian {
                         object::Endianness::Little => f64::from_le_bytes(bytes),
                         object::Endianness::Big => f64::from_be_bytes(bytes),
                     }),
-                    None,
+                    ..Default::default()
-                ));
+                });
             }
             DataType::Bytes => {
-                strs.push((format!("{bytes:#?}"), None));
+                strs.push(LiteralInfo { literal: format!("{bytes:#?}"), ..Default::default() });
             }
             DataType::String => {
                 if let Some(nul_idx) = bytes.iter().position(|&c| c == b'\0') {
@@ -177,16 +212,51 @@ impl DataType {
                     // Special case to display (ASCII) as the label for ASCII-only strings.
                     let (cow, _, had_errors) = encoding_rs::UTF_8.decode(str_bytes);
                     if !had_errors && cow.is_ascii() {
-                        strs.push((format!("{cow}"), Some("ASCII".into())));
+                        let string = format!("{cow}");
+                        let copy_string = escape_special_ascii_characters(&string);
+                        strs.push(LiteralInfo {
+                            literal: string,
+                            label_override: Some("ASCII".into()),
+                            copy_string: Some(copy_string),
+                            hidden: false,
+                            is_string: true,
+                        });
                     }
-                    for (encoding, encoding_name) in SUPPORTED_ENCODINGS {
+                    for (encoding, encoding_name) in SUPPORTED_ENCODINGS_WITH_NULL_TERM {
                         let (cow, _, had_errors) = encoding.decode(str_bytes);
-                        // Avoid showing ASCII-only strings more than once if the encoding is ASCII-compatible.
+                        if !had_errors {
-                        if !had_errors && (!encoding.is_ascii_compatible() || !cow.is_ascii()) {
+                            let string = format!("{cow}");
-                            strs.push((format!("{cow}"), Some(encoding_name.into())));
+                            let copy_string = escape_special_ascii_characters(&string);
+                            // Avoid showing ASCII-only strings more than once if the encoding is ASCII-compatible.
+                            let hidden = encoding.is_ascii_compatible() && cow.is_ascii();
+                            strs.push(LiteralInfo {
+                                literal: string,
+                                label_override: Some(encoding_name.into()),
+                                copy_string: Some(copy_string),
+                                hidden,
+                                is_string: true,
+                            });
                         }
                     }
                 }
+
+                for (encoding, encoding_name) in SUPPORTED_ENCODINGS_NO_NULL_TERM {
+                    let (cow, _, had_errors) = encoding.decode(bytes);
+                    if had_errors {
+                        continue;
+                    }
+                    let trimmed = cow.trim_end_matches('\0');
+                    if !trimmed.is_empty() {
+                        let copy_string = escape_special_ascii_characters(trimmed);
+                        strs.push(LiteralInfo {
+                            literal: trimmed.to_string(),
+                            label_override: Some(encoding_name.into()),
+                            copy_string: Some(copy_string),
+                            hidden: false,
+                            is_string: true,
+                        });
+                    }
+                }
             }
         }
 
@@ -321,7 +391,8 @@ impl dyn Arch {
 
 pub trait Arch: Any + Debug + Send + Sync {
     /// Finishes arch-specific initialization that must be done after sections have been combined.
-    fn post_init(&mut self, _sections: &[Section], _symbols: &[Symbol]) {}
+    fn post_init(&mut self, _sections: &[Section], _symbols: &[Symbol], _symbol_indices: &[usize]) {
+    }
 
     /// Generate a list of instructions references (offset, size, opcode) from the given code.
     ///
@@ -499,3 +570,21 @@ pub struct RelocationOverride {
     pub target: RelocationOverrideTarget,
     pub addend: i64,
 }
+
+/// Escape ASCII characters such as \n or \t, but not Unicode characters such as \u{3000}.
+/// Suitable for copying to clipboard.
+fn escape_special_ascii_characters(value: &str) -> String {
+    let mut escaped = String::new();
+    escaped.push('"');
+    for c in value.chars() {
+        if c.is_ascii() {
+            for e in c.escape_default() {
+                escaped.push(e);
+            }
+        } else {
+            escaped.push(c);
+        }
+    }
+    escaped.push('"');
+    escaped
+}

objdiff-core/src/arch/ppc/flow_analysis.rs

@@ -513,6 +513,8 @@ pub fn ppc_data_flow_analysis(
     )
 }
 
+// Note: This function only supports MWCC ASCII strings.
+// Other encodings and other compilers are currently not supported.
 fn get_string_data(obj: &Object, symbol_index: usize, offset: Simm) -> Option<&str> {
     if let Some(sym) = obj.symbols.get(symbol_index)
         && sym.name.starts_with("@stringBase")

objdiff-core/src/arch/ppc/mod.rs

@@ -238,9 +238,9 @@ impl Arch for ArchPpc {
                         addend: 0,
                     })),
                     |(_, reloc)| match reloc.target() {
-                        object::RelocationTarget::Symbol(index) => Ok(Some(RelocationOverride {
+                        object::RelocationTarget::Symbol(_) => Ok(Some(RelocationOverride {
                             target: RelocationOverrideTarget::Keep,
-                            addend: index.0 as u16 as i16 as i64,
+                            addend: 0,
                         })),
                         target => Err(anyhow!("Unsupported IMAGE_REL_PPC_PAIR target {target:?}")),
                     },
@@ -342,7 +342,10 @@ impl Arch for ArchPpc {
                 elf::R_PPC_UADDR32 => 4,
                 _ => 1,
             },
-            _ => 1,
+            RelocationFlags::Coff(r_type) => match r_type {
+                pe::IMAGE_REL_PPC_ADDR32 => 4,
+                _ => 1,
+            },
         }
     }
 
@@ -355,8 +358,13 @@ impl Arch for ArchPpc {
     }
 
     fn guess_data_type(&self, resolved: ResolvedInstructionRef, bytes: &[u8]) -> Option<DataType> {
-        if resolved.relocation.is_some_and(|r| r.symbol.name.starts_with("@stringBase")) {
+        if resolved.relocation.is_some_and(|r| {
-            // Pooled string.
+            r.symbol.name.starts_with("@stringBase")
+                || r.symbol.name.starts_with("@wstringBase")
+                || r.symbol.name.starts_with("$SG")
+                || r.symbol.demangled_name == Some("`string'".to_string())
+        }) {
+            // Compiler-generated symbol name for a string or a pool of strings.
             return Some(DataType::String);
         }
         let opcode = powerpc::Opcode::from(resolved.ins_ref.opcode);
@@ -440,9 +448,13 @@ impl Arch for ArchPpc {
         let simplified = ins.simplified().to_string();
         let show_orig = orig != simplified;
         let mut out = Vec::with_capacity(2);
-        out.push(ContextItem::Copy { value: simplified, label: None });
+        out.push(ContextItem::Copy { value: simplified, label: None, copy_string: None });
         if show_orig {
-            out.push(ContextItem::Copy { value: orig, label: Some("original".to_string()) });
+            out.push(ContextItem::Copy {
+                value: orig,
+                label: Some("original".to_string()),
+                copy_string: None,
+            });
         }
         out
     }
@@ -463,12 +475,27 @@ impl Arch for ArchPpc {
         }
         Ok(next_address.saturating_sub(symbol.address))
     }
+
+    fn post_init(&mut self, _sections: &[Section], _symbols: &[Symbol], symbol_indices: &[usize]) {
+        // Change the indices used as keys from the original symbol indices to the new symbol array indices
+        self.extab = Self::convert_extab_map_indices(self, symbol_indices);
+    }
 }
 
 impl ArchPpc {
     pub fn extab_for_symbol(&self, symbol_index: usize) -> Option<&ExceptionInfo> {
         self.extab.as_ref()?.get(&symbol_index)
     }
+
+    pub fn convert_extab_map_indices(
+        &self,
+        symbol_indices: &[usize],
+    ) -> Option<BTreeMap<usize, ExceptionInfo>> {
+        let new_map: BTreeMap<usize, ExceptionInfo> =
+            self.extab.as_ref()?.iter().map(|e| (symbol_indices[*e.0 + 1], e.1.clone())).collect();
+
+        Some(new_map)
+    }
 }
 
 fn zero_reloc(code: u32, reloc: &Relocation) -> u32 {

objdiff-core/src/arch/superh/mod.rs

@@ -35,8 +35,8 @@ impl Arch for ArchSuperH {
         let mut ops = Vec::<InstructionRef>::with_capacity(code.len() / 2);
         let mut offset = address;
 
-        for chunk in code.chunks_exact(2) {
+        for chunk in code.as_chunks::<2>().0 {
-            let opcode = u16::from_be_bytes(chunk.try_into().unwrap());
+            let opcode = u16::from_be_bytes(*chunk);
             let mut parts: Vec<InstructionPart> = vec![];
             let resolved: ResolvedInstructionRef = Default::default();
             let mut branch_dest: Option<u64> = None;
@@ -80,8 +80,8 @@ impl Arch for ArchSuperH {
             let mut data_offsets = BTreeMap::<u64, DataInfo>::new();
 
             let mut pos: u64 = 0;
-            for chunk in symbol_data.chunks_exact(2) {
+            for chunk in symbol_data.as_chunks::<2>().0 {
-                let opcode = u16::from_be_bytes(chunk.try_into().unwrap());
+                let opcode = u16::from_be_bytes(*chunk);
                 // mov.w
                 if (opcode & 0xf000) == 0x9000 {
                     let target = (opcode as u64 & 0xff) * 2 + 4 + pos;

objdiff-core/src/arch/x86.rs

@@ -68,14 +68,26 @@ impl ArchX86 {
                     _ => None,
                 },
                 RelocationFlags::Elf(typ) => match typ {
-                    elf::R_386_32 | elf::R_386_PC32 => Some(4),
+                    elf::R_386_32
+                    | elf::R_386_PC32
+                    | elf::R_386_GOT32
+                    | elf::R_386_PLT32
+                    | elf::R_386_GOTOFF
+                    | elf::R_386_GOTPC => Some(4),
                     elf::R_386_16 => Some(2),
                     _ => None,
                 },
             },
             Architecture::X86_64 => match flags {
                 RelocationFlags::Coff(typ) => match typ {
-                    pe::IMAGE_REL_AMD64_ADDR32NB | pe::IMAGE_REL_AMD64_REL32 => Some(4),
+                    pe::IMAGE_REL_AMD64_ADDR32NB
+                    | pe::IMAGE_REL_AMD64_REL32
+                    | pe::IMAGE_REL_AMD64_REL32_1
+                    | pe::IMAGE_REL_AMD64_REL32_2
+                    | pe::IMAGE_REL_AMD64_REL32_3
+                    | pe::IMAGE_REL_AMD64_REL32_4
+                    | pe::IMAGE_REL_AMD64_REL32_5
+                    | pe::IMAGE_REL_AMD64_SECREL => Some(4),
                     pe::IMAGE_REL_AMD64_ADDR64 => Some(8),
                     _ => None,
                 },
@@ -176,6 +188,12 @@ impl Arch for ArchX86 {
                 branch_dest,
             });
         }
+        // Strip trailing int3 instructions (alignment padding) for x64
+        if matches!(self.arch, Architecture::X86_64) {
+            while out.last().is_some_and(|i| i.opcode == iced_x86::Mnemonic::Int3 as u16) {
+                out.pop();
+            }
+        }
         Ok(out)
     }
 
@@ -188,8 +206,8 @@ impl Arch for ArchX86 {
         if resolved.ins_ref.opcode == OPCODE_DATA {
             let (mnemonic, imm) = match resolved.ins_ref.size {
                 1 => (".byte", resolved.code[0] as u64),
-                2 => (".word", self.endianness.read_u16_bytes(resolved.code.try_into()?) as u64),
+                2 => (".word", self.endianness.read_u16(resolved.code.try_into()?) as u64),
-                4 => (".dword", self.endianness.read_u32_bytes(resolved.code.try_into()?) as u64),
+                4 => (".dword", self.endianness.read_u32(resolved.code.try_into()?) as u64),
                 _ => bail!("Unsupported x86 inline data size {}", resolved.ins_ref.size),
             };
             cb(InstructionPart::opcode(mnemonic, OPCODE_DATA))?;
@@ -272,27 +290,43 @@ impl Arch for ArchX86 {
                 object::RelocationFlags::Coff {
                     typ: pe::IMAGE_REL_I386_DIR32 | pe::IMAGE_REL_I386_REL32,
                 }
-                | object::RelocationFlags::Elf { r_type: elf::R_386_32 | elf::R_386_PC32 } => {
+                | object::RelocationFlags::Elf {
+                    r_type:
+                        elf::R_386_32
+                        | elf::R_386_PC32
+                        | elf::R_386_GOT32
+                        | elf::R_386_PLT32
+                        | elf::R_386_GOTOFF
+                        | elf::R_386_GOTPC,
+                } => {
                     let data =
                         section.data()?[address as usize..address as usize + 4].try_into()?;
-                    self.endianness.read_i32_bytes(data) as i64
+                    self.endianness.read_i32(data) as i64
                 }
                 flags => bail!("Unsupported x86 implicit relocation {flags:?}"),
             },
             Architecture::X86_64 => match relocation.flags() {
                 object::RelocationFlags::Coff {
-                    typ: pe::IMAGE_REL_AMD64_ADDR32NB | pe::IMAGE_REL_AMD64_REL32,
+                    typ:
+                        pe::IMAGE_REL_AMD64_ADDR32NB
+                        | pe::IMAGE_REL_AMD64_REL32
+                        | pe::IMAGE_REL_AMD64_REL32_1
+                        | pe::IMAGE_REL_AMD64_REL32_2
+                        | pe::IMAGE_REL_AMD64_REL32_3
+                        | pe::IMAGE_REL_AMD64_REL32_4
+                        | pe::IMAGE_REL_AMD64_REL32_5
+                        | pe::IMAGE_REL_AMD64_SECREL,
                 }
                 | object::RelocationFlags::Elf { r_type: elf::R_X86_64_32 | elf::R_X86_64_PC32 } => {
                     let data =
                         section.data()?[address as usize..address as usize + 4].try_into()?;
-                    self.endianness.read_i32_bytes(data) as i64
+                    self.endianness.read_i32(data) as i64
                 }
                 object::RelocationFlags::Coff { typ: pe::IMAGE_REL_AMD64_ADDR64 }
                 | object::RelocationFlags::Elf { r_type: elf::R_X86_64_64 } => {
                     let data =
                         section.data()?[address as usize..address as usize + 8].try_into()?;
-                    self.endianness.read_i64_bytes(data)
+                    self.endianness.read_i64(data)
                 }
                 flags => bail!("Unsupported x86-64 implicit relocation {flags:?}"),
             },
@@ -308,13 +342,28 @@ impl Arch for ArchX86 {
                     pe::IMAGE_REL_I386_REL32 => Some("IMAGE_REL_I386_REL32"),
                     _ => None,
                 },
-                _ => None,
+                RelocationFlags::Elf(typ) => match typ {
+                    elf::R_386_32 => Some("R_386_32"),
+                    elf::R_386_PC32 => Some("R_386_PC32"),
+                    elf::R_386_GOT32 => Some("R_386_GOT32"),
+                    elf::R_386_PLT32 => Some("R_386_PLT32"),
+                    elf::R_386_GOTOFF => Some("R_386_GOTOFF"),
+                    elf::R_386_GOTPC => Some("R_386_GOTPC"),
+                    elf::R_386_16 => Some("R_386_16"),
+                    _ => None,
+                },
             },
             Architecture::X86_64 => match flags {
                 RelocationFlags::Coff(typ) => match typ {
                     pe::IMAGE_REL_AMD64_ADDR64 => Some("IMAGE_REL_AMD64_ADDR64"),
                     pe::IMAGE_REL_AMD64_ADDR32NB => Some("IMAGE_REL_AMD64_ADDR32NB"),
                     pe::IMAGE_REL_AMD64_REL32 => Some("IMAGE_REL_AMD64_REL32"),
+                    pe::IMAGE_REL_AMD64_REL32_1 => Some("IMAGE_REL_AMD64_REL32_1"),
+                    pe::IMAGE_REL_AMD64_REL32_2 => Some("IMAGE_REL_AMD64_REL32_2"),
+                    pe::IMAGE_REL_AMD64_REL32_3 => Some("IMAGE_REL_AMD64_REL32_3"),
+                    pe::IMAGE_REL_AMD64_REL32_4 => Some("IMAGE_REL_AMD64_REL32_4"),
+                    pe::IMAGE_REL_AMD64_REL32_5 => Some("IMAGE_REL_AMD64_REL32_5"),
+                    pe::IMAGE_REL_AMD64_SECREL => Some("IMAGE_REL_AMD64_SECREL"),
                     _ => None,
                 },
                 _ => None,