Version 2.0.0-beta.1

Also fixes case insensitivity and
properly searches the .comm section

Fixes #80

.gitignore

@@ -22,3 +22,4 @@ android.keystore
 *.frag
 *.vert
 *.metal
+.vscode/launch.json

Cargo.lock

@@ -110,9 +110,9 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.82"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f538837af36e6f6a9be0faa67f9a314f8119e4e4b5867c6ab40ed60360142519"
+checksum = "b3d1d046238990b9cf5bcde22a3fb3584ee5cf65fb2765f454ed428c7a0063da"
 
 [[package]]
 name = "arboard"
@@ -524,9 +524,9 @@ checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
 [[package]]
 name = "bytes"
-version = "1.6.0"
+version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "514de17de45fdb8dc022b1a7975556c53c86f9f0aa5f534b98977b171857c2c9"
+checksum = "a12916984aab3fa6e39d655a33e09c0071eb36d6ab3aea5c2d78551f1df6d952"
 
 [[package]]
 name = "calloop"
@@ -970,6 +970,15 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2e06f9bce634a3c898eb1e5cb949ff63133cbb218af93cc9b38b31d6f3ea285"
 
+[[package]]
+name = "cwextab"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a92e840be31d11ead5f357b8fc503133d3657845d0ccf539afcc7d1212fad226"
+dependencies = [
+ "anyhow",
+]
+
 [[package]]
 name = "d3d12"
 version = "0.19.0"
@@ -2274,9 +2283,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.154"
+version = "0.2.155"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae743338b92ff9146ce83992f766a31066a91a8c84a45e0e9f21e7cf6de6d346"
+checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
 
 [[package]]
 name = "libloading"
@@ -2789,7 +2798,7 @@ dependencies = [
 
 [[package]]
 name = "objdiff-cli"
-version = "2.0.0-alpha.5"
+version = "2.0.0-beta.1"
 dependencies = [
  "anyhow",
  "argp",
@@ -2808,13 +2817,14 @@ dependencies = [
 
 [[package]]
 name = "objdiff-core"
-version = "2.0.0-alpha.5"
+version = "2.0.0-beta.1"
 dependencies = [
  "anyhow",
  "arm-attr",
  "byteorder",
  "cpp_demangle",
  "cwdemangle",
+ "cwextab",
  "filetime",
  "flagset",
  "gimli 0.29.0",
@@ -2838,7 +2848,7 @@ dependencies = [
 
 [[package]]
 name = "objdiff-gui"
-version = "2.0.0-alpha.5"
+version = "2.0.0-beta.1"
 dependencies = [
  "anyhow",
  "bytes",
@@ -2846,6 +2856,7 @@ dependencies = [
  "console_error_panic_hook",
  "const_format",
  "cwdemangle",
+ "cwextab",
  "dirs",
  "eframe",
  "egui",
@@ -2861,8 +2872,10 @@ dependencies = [
  "path-slash",
  "png",
  "pollster",
+ "regex",
  "reqwest",
  "rfd",
+ "rlwinmdec",
  "ron",
  "self_update",
  "serde",
@@ -2905,9 +2918,9 @@ checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
 [[package]]
 name = "openssl"
-version = "0.10.64"
+version = "0.10.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95a0481286a310808298130d22dd1fef0fa571e05a8f44ec801801e84b216b1f"
+checksum = "9529f4786b70a3e8c61e11179af17ab6188ad8d0ded78c5529441ed39d4bd9c1"
 dependencies = [
  "bitflags 2.5.0",
  "cfg-if",
@@ -2937,9 +2950,9 @@ checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
 
 [[package]]
 name = "openssl-sys"
-version = "0.9.102"
+version = "0.9.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c597637d56fbc83893a35eb0dd04b2b8e7a50c91e64e9493e398b5df4fb45fa2"
+checksum = "7f9e8deee91df40a943c71b917e5874b951d32a802526c85721ce3b776c929d6"
 dependencies = [
  "cc",
  "libc",
@@ -3377,9 +3390,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.10.4"
+version = "1.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c117dbdfde9c8308975b6a18d71f3f385c89461f7b3fb054288ecf2a2058ba4c"
+checksum = "b91213439dad192326a0d7c6ee3955910425f441d7038e0d6933b0aec5c4517f"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -3509,6 +3522,15 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "rlwinmdec"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2076dbc187938f3db71c03c85d143febf01026631189dc8ca85f8c886d90ea12"
+dependencies = [
+ "anyhow",
+]
+
 [[package]]
 name = "ron"
 version = "0.8.1"
@@ -4330,9 +4352,9 @@ dependencies = [
 
 [[package]]
 name = "unarm"
-version = "1.3.0"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c6bff109f0171a299559d82a7236e056093fc0dcd2a7da86aa745f82281e2d31"
+checksum = "379762d9433a2e6e498cde97801fb238318b024a513d0843eeac98b9056b9f3c"
 
 [[package]]
 name = "unicase"
@@ -4743,9 +4765,9 @@ dependencies = [
 
 [[package]]
 name = "wgpu-hal"
-version = "0.19.4"
+version = "0.19.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc1a4924366df7ab41a5d8546d6534f1f33231aa5b3f72b9930e300f254e39c3"
+checksum = "bfabcfc55fd86611a855816326b2d54c3b2fd7972c27ce414291562650552703"
 dependencies = [
  "android_system_properties",
  "arrayvec",

objdiff-cli/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "objdiff-cli"
-version = "2.0.0-alpha.5"
+version = "2.0.0-beta.1"
 edition = "2021"
 rust-version = "1.70"
 authors = ["Luke Street <luke@street.dev>"]

objdiff-cli/src/cmd/diff.rs

@@ -817,6 +817,12 @@ impl FunctionDiffUi {
             mips_abi: Default::default(),            // TODO
             mips_instr_category: Default::default(), // TODO
             arm_arch_version: Default::default(),    // TODO
+            arm_unified_syntax: true,                // TODO
+            arm_av_registers: false,                 // TODO
+            arm_r9_usage: Default::default(),        // TODO
+            arm_sl_usage: false,                     // TODO
+            arm_fp_usage: false,                     // TODO
+            arm_ip_usage: false,                     // TODO
         };
         let target = self
             .target_path

objdiff-core/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "objdiff-core"
-version = "2.0.0-alpha.5"
+version = "2.0.0-beta.1"
 edition = "2021"
 rust-version = "1.70"
 authors = ["Luke Street <luke@street.dev>"]
@@ -17,7 +17,7 @@ any-arch = [] # Implicit, used to check if any arch is enabled
 config = ["globset", "semver", "serde_json", "serde_yaml"]
 dwarf = ["gimli"]
 mips = ["any-arch", "rabbitizer"]
-ppc = ["any-arch", "cwdemangle", "ppc750cl"]
+ppc = ["any-arch", "cwdemangle", "cwextab", "ppc750cl"]
 x86 = ["any-arch", "cpp_demangle", "iced-x86", "msvc-demangler"]
 arm = ["any-arch", "cpp_demangle", "unarm", "arm-attr"]
 
@@ -45,6 +45,7 @@ gimli = { version = "0.29.0", default-features = false, features = ["read-all"],
 
 # ppc
 cwdemangle = { version = "1.0.0", optional = true }
+cwextab = { version = "0.2.3", optional = true }
 ppc750cl = { git = "https://github.com/encounter/ppc750cl", rev = "6cbd7d888c7082c2c860f66cbb9848d633f753ed", optional = true }
 
 # mips
@@ -56,5 +57,5 @@ iced-x86 = { version = "1.21.0", default-features = false, features = ["std", "d
 msvc-demangler = { version = "0.10.0", optional = true }
 
 # arm
-unarm = { version = "1.3.0", optional = true }
+unarm = { version = "1.4.0", optional = true }
 arm-attr = { version = "0.1.1", optional = true }

objdiff-core/src/arch/arm.rs

@@ -13,12 +13,12 @@ use object::{
 use unarm::{
     args::{Argument, OffsetImm, OffsetReg, Register},
     parse::{ArmVersion, ParseMode, Parser},
-    ParsedIns,
+    DisplayOptions, ParseFlags, ParsedIns, RegNames,
 };
 
 use crate::{
     arch::{ObjArch, ProcessCodeResult},
-    diff::{ArmArchVersion, DiffObjConfig},
+    diff::{ArmArchVersion, ArmR9Usage, DiffObjConfig},
     obj::{ObjIns, ObjInsArg, ObjInsArgValue, ObjReloc, ObjSection},
 };
 
@@ -149,7 +149,24 @@ impl ObjArch for ObjArchArm {
             object::Endianness::Little => unarm::Endian::Little,
             object::Endianness::Big => unarm::Endian::Big,
         };
-        let mut parser = Parser::new(version, first_mapping, start_addr, endian, code);
+
+        let parse_flags = ParseFlags { ual: config.arm_unified_syntax };
+
+        let mut parser = Parser::new(version, first_mapping, start_addr, endian, parse_flags, code);
+
+        let display_options = DisplayOptions {
+            reg_names: RegNames {
+                av_registers: config.arm_av_registers,
+                r9_use: match config.arm_r9_usage {
+                    ArmR9Usage::GeneralPurpose => unarm::R9Use::GeneralPurpose,
+                    ArmR9Usage::Sb => unarm::R9Use::Pid,
+                    ArmR9Usage::Tr => unarm::R9Use::Tls,
+                },
+                explicit_stack_limit: config.arm_sl_usage,
+                frame_pointer: config.arm_fp_usage,
+                ip: config.arm_ip_usage,
+            },
+        };
 
         while let Some((address, op, ins)) = parser.next() {
             if let Some(next) = next_mapping {
@@ -187,7 +204,7 @@ impl ObjArch for ObjArchArm {
             let (args, branch_dest) = if reloc.is_some() && parser.mode == ParseMode::Data {
                 (vec![ObjInsArg::Reloc], None)
             } else {
-                push_args(&ins, config, reloc_arg, address)?
+                push_args(&ins, config, reloc_arg, address, display_options)?
             };
 
             ops.push(op.id());
@@ -200,7 +217,7 @@ impl ObjArch for ObjArchArm {
                 reloc,
                 branch_dest,
                 line,
-                formatted: ins.to_string(),
+                formatted: ins.display(display_options).to_string(),
                 orig: None,
             });
         }
@@ -281,6 +298,7 @@ fn push_args(
     config: &DiffObjConfig,
     reloc_arg: Option<usize>,
     cur_addr: u32,
+    display_options: DisplayOptions,
 ) -> Result<(Vec<ObjInsArg>, Option<u64>)> {
     let mut args = vec![];
     let mut branch_dest = None;
@@ -318,7 +336,9 @@ fn push_args(
                         deref = true;
                         args.push(ObjInsArg::PlainText("[".into()));
                     }
-                    args.push(ObjInsArg::Arg(ObjInsArgValue::Opaque(reg.reg.to_string().into())));
+                    args.push(ObjInsArg::Arg(ObjInsArgValue::Opaque(
+                        reg.reg.display(display_options.reg_names).to_string().into(),
+                    )));
                     if reg.writeback {
                         if reg.deref {
                             writeback = true;
@@ -336,7 +356,10 @@ fn push_args(
                                 args.push(ObjInsArg::PlainText(config.separator().into()));
                             }
                             args.push(ObjInsArg::Arg(ObjInsArgValue::Opaque(
-                                Register::parse(i).to_string().into(),
+                                Register::parse(i)
+                                    .display(display_options.reg_names)
+                                    .to_string()
+                                    .into(),
                             )));
                             first = false;
                         }
@@ -376,14 +399,16 @@ fn push_args(
                 Argument::ShiftReg(shift) => {
                     args.push(ObjInsArg::Arg(ObjInsArgValue::Opaque(shift.op.to_string().into())));
                     args.push(ObjInsArg::PlainText(" ".into()));
-                    args.push(ObjInsArg::Arg(ObjInsArgValue::Opaque(shift.reg.to_string().into())));
+                    args.push(ObjInsArg::Arg(ObjInsArgValue::Opaque(
+                        shift.reg.display(display_options.reg_names).to_string().into(),
+                    )));
                 }
                 Argument::OffsetReg(offset) => {
                     if !offset.add {
                         args.push(ObjInsArg::PlainText("-".into()));
                     }
                     args.push(ObjInsArg::Arg(ObjInsArgValue::Opaque(
-                        offset.reg.to_string().into(),
+                        offset.reg.display(display_options.reg_names).to_string().into(),
                     )));
                 }
                 Argument::CpsrMode(mode) => {
@@ -398,9 +423,9 @@ fn push_args(
                 | Argument::StatusMask(_)
                 | Argument::Shift(_)
                 | Argument::CpsrFlags(_)
-                | Argument::Endian(_) => {
+                | Argument::Endian(_) => args.push(ObjInsArg::Arg(ObjInsArgValue::Opaque(
-                    args.push(ObjInsArg::Arg(ObjInsArgValue::Opaque(arg.to_string().into())))
+                    arg.display(display_options).to_string().into(),
-                }
+                ))),
             }
         }
     }

objdiff-core/src/diff/data.rs

@@ -11,27 +11,6 @@ use crate::{
     obj::{ObjInfo, ObjSection, SymbolRef},
 };
 
-/// Compare the addresses and sizes of each symbol in the BSS sections.
-pub fn diff_bss_section(
-    left: &ObjSection,
-    right: &ObjSection,
-) -> Result<(ObjSectionDiff, ObjSectionDiff)> {
-    let deadline = Instant::now() + Duration::from_secs(5);
-    let left_sizes = left.symbols.iter().map(|s| (s.section_address, s.size)).collect::<Vec<_>>();
-    let right_sizes = right.symbols.iter().map(|s| (s.section_address, s.size)).collect::<Vec<_>>();
-    let ops = capture_diff_slices_deadline(
-        Algorithm::Patience,
-        &left_sizes,
-        &right_sizes,
-        Some(deadline),
-    );
-    let match_percent = get_diff_ratio(&ops, left_sizes.len(), right_sizes.len()) * 100.0;
-    Ok((
-        ObjSectionDiff { symbols: vec![], data_diff: vec![], match_percent: Some(match_percent) },
-        ObjSectionDiff { symbols: vec![], data_diff: vec![], match_percent: Some(match_percent) },
-    ))
-}
-
 pub fn diff_bss_symbol(
     left_obj: &ObjInfo,
     right_obj: &ObjInfo,
@@ -65,6 +44,8 @@ pub fn no_diff_symbol(_obj: &ObjInfo, symbol_ref: SymbolRef) -> ObjSymbolDiff {
 pub fn diff_data_section(
     left: &ObjSection,
     right: &ObjSection,
+    left_section_diff: &ObjSectionDiff,
+    right_section_diff: &ObjSectionDiff,
 ) -> Result<(ObjSectionDiff, ObjSectionDiff)> {
     let deadline = Instant::now() + Duration::from_secs(5);
     let left_max = left.symbols.iter().map(|s| s.section_address + s.size).max().unwrap_or(0);
@@ -73,7 +54,6 @@ pub fn diff_data_section(
     let right_data = &right.data[..right_max as usize];
     let ops =
         capture_diff_slices_deadline(Algorithm::Patience, left_data, right_data, Some(deadline));
-    let match_percent = get_diff_ratio(&ops, left_data.len(), right_data.len()) * 100.0;
 
     let mut left_diff = Vec::<ObjDataDiff>::new();
     let mut right_diff = Vec::<ObjDataDiff>::new();
@@ -143,18 +123,11 @@ pub fn diff_data_section(
         }
     }
 
-    Ok((
+    let (mut left_section_diff, mut right_section_diff) =
-        ObjSectionDiff {
+        diff_generic_section(left, right, left_section_diff, right_section_diff)?;
-            symbols: vec![],
+    left_section_diff.data_diff = left_diff;
-            data_diff: left_diff,
+    right_section_diff.data_diff = right_diff;
-            match_percent: Some(match_percent),
+    Ok((left_section_diff, right_section_diff))
-        },
-        ObjSectionDiff {
-            symbols: vec![],
-            data_diff: right_diff,
-            match_percent: Some(match_percent),
-        },
-    ))
 }
 
 pub fn diff_data_symbol(
@@ -195,21 +168,24 @@ pub fn diff_data_symbol(
     ))
 }
 
-/// Compare the text sections of two object files.
+/// Compares a section of two object files.
-/// This essentially adds up the match percentage of each symbol in the text section.
+/// This essentially adds up the match percentage of each symbol in the section.
-pub fn diff_text_section(
+pub fn diff_generic_section(
     left: &ObjSection,
     _right: &ObjSection,
     left_diff: &ObjSectionDiff,
     _right_diff: &ObjSectionDiff,
 ) -> Result<(ObjSectionDiff, ObjSectionDiff)> {
-    let match_percent = left
+    let match_percent = if left_diff.symbols.iter().all(|d| d.match_percent == Some(100.0)) {
-        .symbols
+        100.0 // Avoid fp precision issues
+    } else {
+        left.symbols
             .iter()
             .zip(left_diff.symbols.iter())
             .map(|(s, d)| d.match_percent.unwrap_or(0.0) * s.size as f32)
             .sum::<f32>()
-        / left.size as f32;
+            / left.size as f32
+    };
     Ok((
         ObjSectionDiff { symbols: vec![], data_diff: vec![], match_percent: Some(match_percent) },
         ObjSectionDiff { symbols: vec![], data_diff: vec![], match_percent: Some(match_percent) },

objdiff-core/src/diff/mod.rs

@@ -6,8 +6,8 @@ use crate::{
     diff::{
         code::{diff_code, no_diff_code, process_code_symbol},
         data::{
-            diff_bss_section, diff_bss_symbol, diff_data_section, diff_data_symbol,
+            diff_bss_symbol, diff_data_section, diff_data_symbol, diff_generic_section,
-            diff_text_section, no_diff_symbol,
+            no_diff_symbol,
         },
     },
     obj::{ObjInfo, ObjIns, ObjSection, ObjSectionKind, ObjSymbol, SymbolRef},
@@ -117,6 +117,34 @@ pub enum ArmArchVersion {
     V6K,
 }
 
+#[derive(
+    Debug,
+    Copy,
+    Clone,
+    Default,
+    Eq,
+    PartialEq,
+    serde::Deserialize,
+    serde::Serialize,
+    strum::VariantArray,
+    strum::EnumMessage,
+)]
+pub enum ArmR9Usage {
+    #[default]
+    #[strum(
+        message = "R9 or V6 (default)",
+        detailed_message = "Use R9 as a general-purpose register."
+    )]
+    GeneralPurpose,
+    #[strum(
+        message = "SB (static base)",
+        detailed_message = "Used for position-independent data (PID)."
+    )]
+    Sb,
+    #[strum(message = "TR (TLS register)", detailed_message = "Used for thread-local storage.")]
+    Tr,
+}
+
 #[inline]
 const fn default_true() -> bool { true }
 
@@ -134,6 +162,12 @@ pub struct DiffObjConfig {
     pub mips_instr_category: MipsInstrCategory,
     // ARM
     pub arm_arch_version: ArmArchVersion,
+    pub arm_unified_syntax: bool,
+    pub arm_av_registers: bool,
+    pub arm_r9_usage: ArmR9Usage,
+    pub arm_sl_usage: bool,
+    pub arm_fp_usage: bool,
+    pub arm_ip_usage: bool,
 }
 
 impl Default for DiffObjConfig {
@@ -146,6 +180,12 @@ impl Default for DiffObjConfig {
             mips_abi: Default::default(),
             mips_instr_category: Default::default(),
             arm_arch_version: Default::default(),
+            arm_unified_syntax: true,
+            arm_av_registers: false,
+            arm_r9_usage: Default::default(),
+            arm_sl_usage: false,
+            arm_fp_usage: false,
+            arm_ip_usage: false,
         }
     }
 }
@@ -443,10 +483,10 @@ pub fn diff_objs(
             let left_section = &left_obj.sections[left_section_idx];
             let right_section = &right_obj.sections[right_section_idx];
             match section_kind {
-                ObjSectionKind::Code => {
+                ObjSectionKind::Code | ObjSectionKind::Bss => {
                     let left_section_diff = left_out.section_diff(left_section_idx);
                     let right_section_diff = right_out.section_diff(right_section_idx);
-                    let (left_diff, right_diff) = diff_text_section(
+                    let (left_diff, right_diff) = diff_generic_section(
                         left_section,
                         right_section,
                         left_section_diff,
@@ -456,12 +496,14 @@ pub fn diff_objs(
                     right_out.section_diff_mut(right_section_idx).merge(right_diff);
                 }
                 ObjSectionKind::Data => {
-                    let (left_diff, right_diff) = diff_data_section(left_section, right_section)?;
+                    let left_section_diff = left_out.section_diff(left_section_idx);
-                    left_out.section_diff_mut(left_section_idx).merge(left_diff);
+                    let right_section_diff = right_out.section_diff(right_section_idx);
-                    right_out.section_diff_mut(right_section_idx).merge(right_diff);
+                    let (left_diff, right_diff) = diff_data_section(
-                }
+                        left_section,
-                ObjSectionKind::Bss => {
+                        right_section,
-                    let (left_diff, right_diff) = diff_bss_section(left_section, right_section)?;
+                        left_section_diff,
+                        right_section_diff,
+                    )?;
                     left_out.section_diff_mut(left_section_idx).merge(left_diff);
                     right_out.section_diff_mut(right_section_idx).merge(right_diff);
                 }
@@ -590,6 +632,26 @@ fn find_symbol(
             }
         }
     }
+    // Match Metrowerks symbol$1234 against symbol$2345
+    if let Some((prefix, suffix)) = in_symbol.name.split_once('$') {
+        if !suffix.chars().all(char::is_numeric) {
+            return None;
+        }
+        for (section_idx, section) in obj.sections.iter().enumerate() {
+            if section.kind != in_section.kind {
+                continue;
+            }
+            if let Some(symbol_idx) = section.symbols.iter().position(|symbol| {
+                if let Some((p, s)) = symbol.name.split_once('$') {
+                    prefix == p && s.chars().all(char::is_numeric)
+                } else {
+                    false
+                }
+            }) {
+                return Some(SymbolRef { section_idx, symbol_idx });
+            }
+        }
+    }
     None
 }
 

objdiff-core/src/obj/mod.rs

@@ -3,6 +3,7 @@ pub mod split_meta;
 
 use std::{borrow::Cow, collections::BTreeMap, fmt, path::PathBuf};
 
+use cwextab::*;
 use filetime::FileTime;
 use flagset::{flags, FlagSet};
 use object::RelocationFlags;
@@ -113,6 +114,9 @@ pub struct ObjIns {
 pub struct ObjSymbol {
     pub name: String,
     pub demangled_name: Option<String>,
+    pub has_extab: bool,
+    pub extab_name: Option<String>,
+    pub extabindex_name: Option<String>,
     pub address: u64,
     pub section_address: u64,
     pub size: u64,
@@ -123,6 +127,13 @@ pub struct ObjSymbol {
     pub virtual_address: Option<u64>,
 }
 
+#[derive(Debug, Clone)]
+pub struct ObjExtab {
+    pub func: ObjSymbol,
+    pub data: ExceptionTableData,
+    pub dtors: Vec<ObjSymbol>,
+}
+
 pub struct ObjInfo {
     pub arch: Box<dyn ObjArch>,
     pub path: PathBuf,
@@ -130,6 +141,8 @@ pub struct ObjInfo {
     pub sections: Vec<ObjSection>,
     /// Common BSS symbols
     pub common: Vec<ObjSymbol>,
+    /// Exception tables
+    pub extab: Option<Vec<ObjExtab>>,
     /// Split object metadata (.note.split section)
     pub split_meta: Option<SplitMeta>,
 }

objdiff-core/src/obj/read.rs

@@ -2,11 +2,12 @@ use std::{collections::HashSet, fs, io::Cursor, path::Path};
 
 use anyhow::{anyhow, bail, ensure, Context, Result};
 use byteorder::{BigEndian, ReadBytesExt};
+use cwextab::decode_extab;
 use filetime::FileTime;
 use flagset::Flags;
 use object::{
-    BinaryFormat, File, Object, ObjectSection, ObjectSymbol, RelocationTarget, SectionIndex,
+    Architecture, BinaryFormat, File, Object, ObjectSection, ObjectSymbol, RelocationTarget,
-    SectionKind, Symbol, SymbolKind, SymbolScope, SymbolSection,
+    SectionIndex, SectionKind, Symbol, SymbolKind, SymbolScope, SymbolSection,
 };
 
 use crate::{
@@ -14,7 +15,8 @@ use crate::{
     diff::DiffObjConfig,
     obj::{
         split_meta::{SplitMeta, SPLITMETA_SECTION},
-        ObjInfo, ObjReloc, ObjSection, ObjSectionKind, ObjSymbol, ObjSymbolFlagSet, ObjSymbolFlags,
+        ObjExtab, ObjInfo, ObjReloc, ObjSection, ObjSectionKind, ObjSymbol, ObjSymbolFlagSet,
+        ObjSymbolFlags,
     },
 };
 
@@ -71,6 +73,9 @@ fn to_obj_symbol(
     Ok(ObjSymbol {
         name: name.to_string(),
         demangled_name,
+        has_extab: false,
+        extab_name: None,
+        extabindex_name: None,
         address,
         section_address,
         size: symbol.size(),
@@ -170,6 +175,111 @@ fn common_symbols(
         .collect::<Result<Vec<ObjSymbol>>>()
 }
 
+fn section_by_name<'a>(sections: &'a mut [ObjSection], name: &str) -> Option<&'a mut ObjSection> {
+    sections.iter_mut().find(|section| section.name == name)
+}
+
+fn exception_tables(
+    sections: &mut [ObjSection],
+    obj_file: &File<'_>,
+) -> Result<Option<Vec<ObjExtab>>> {
+    //PowerPC only
+    if obj_file.architecture() != Architecture::PowerPc {
+        return Ok(None);
+    }
+
+    //Find the extab/extabindex sections
+    let extab_section = match section_by_name(sections, "extab") {
+        Some(section) => section.clone(),
+        None => {
+            return Ok(None);
+        }
+    };
+    let extabindex_section = match section_by_name(sections, "extabindex") {
+        Some(section) => section.clone(),
+        None => {
+            return Ok(None);
+        }
+    };
+    let text_section = match section_by_name(sections, ".text") {
+        Some(section) => section,
+        None => bail!(".text section is somehow missing, this should not happen"),
+    };
+
+    let mut result: Vec<ObjExtab> = vec![];
+    let extab_symbol_count = extab_section.symbols.len();
+    let extabindex_symbol_count = extabindex_section.symbols.len();
+    let extab_reloc_count = extab_section.relocations.len();
+    let table_count = extab_symbol_count;
+    let mut extab_reloc_index: usize = 0;
+
+    //Make sure that the number of symbols in the extab/extabindex section matches. If not, exit early
+    if extab_symbol_count != extabindex_symbol_count {
+        bail!("Extab/Extabindex symbol counts do not match");
+    }
+
+    //Convert the extab/extabindex section data
+
+    //Go through each extabindex entry
+    for i in 0..table_count {
+        let extabindex = &extabindex_section.symbols[i];
+
+        /* Get the function symbol and extab symbol from the extabindex relocations array. Each extabindex
+        entry has two relocations (the first for the function, the second for the extab entry) */
+        let extab_func = extabindex_section.relocations[i * 2].target.clone();
+        let extab = &extabindex_section.relocations[(i * 2) + 1].target;
+
+        let extab_start_addr = extab.address;
+        let extab_end_addr = extab_start_addr + extab.size;
+
+        //Find the function in the text section, and set the has extab flag
+        for i in 0..text_section.symbols.len() {
+            let func = &mut text_section.symbols[i];
+            if func.name == extab_func.name {
+                func.has_extab = true;
+                func.extab_name = Some(extab.name.clone());
+                func.extabindex_name = Some(extabindex.name.clone());
+            }
+        }
+
+        /* Iterate through the list of extab relocations, continuing until we hit a relocation
+        that isn't within the current extab symbol. Get the target dtor function symbol from
+        each relocation used, and add them to the list. */
+        let mut dtors: Vec<ObjSymbol> = vec![];
+
+        while extab_reloc_index < extab_reloc_count {
+            let extab_reloc = &extab_section.relocations[extab_reloc_index];
+            //If the current entry is past the current extab table, stop here
+            if extab_reloc.address >= extab_end_addr {
+                break;
+            }
+
+            //Otherwise, the current relocation is used by the current table
+            dtors.push(extab_reloc.target.clone());
+            //Go to the next entry
+            extab_reloc_index += 1;
+        }
+
+        //Decode the extab data
+        let start_index = extab_start_addr as usize;
+        let end_index = extab_end_addr as usize;
+        let extab_data = extab_section.data[start_index..end_index].try_into().unwrap();
+        let data = match decode_extab(extab_data) {
+            Some(decoded_data) => decoded_data,
+            None => {
+                log::warn!("Exception table decoding failed for function {}", extab_func.name);
+                return Ok(None);
+            }
+        };
+
+        //Add the new entry to the list
+        let entry = ObjExtab { func: extab_func, data, dtors };
+        result.push(entry);
+    }
+
+    Ok(Some(result))
+}
+
 fn find_section_symbol(
     arch: &dyn ObjArch,
     obj_file: &File<'_>,
@@ -205,6 +315,9 @@ fn find_section_symbol(
     Ok(ObjSymbol {
         name: name.to_string(),
         demangled_name: None,
+        has_extab: false,
+        extab_name: None,
+        extabindex_name: None,
         address: offset,
         section_address: address - section.address(),
         size: 0,
@@ -367,6 +480,9 @@ fn update_combined_symbol(symbol: ObjSymbol, address_change: i64) -> Result<ObjS
     Ok(ObjSymbol {
         name: symbol.name,
         demangled_name: symbol.demangled_name,
+        has_extab: symbol.has_extab,
+        extab_name: symbol.extab_name,
+        extabindex_name: symbol.extabindex_name,
         address: (symbol.address as i64 + address_change).try_into()?,
         section_address: (symbol.section_address as i64 + address_change).try_into()?,
         size: symbol.size,
@@ -482,7 +598,8 @@ pub fn read(obj_path: &Path, config: &DiffObjConfig) -> Result<ObjInfo> {
     }
     line_info(&obj_file, &mut sections)?;
     let common = common_symbols(arch.as_ref(), &obj_file, split_meta.as_ref())?;
-    Ok(ObjInfo { arch, path: obj_path.to_owned(), timestamp, sections, common, split_meta })
+    let extab = exception_tables(&mut sections, &obj_file)?;
+    Ok(ObjInfo { arch, path: obj_path.to_owned(), timestamp, sections, common, extab, split_meta })
 }
 
 pub fn has_function(obj_path: &Path, symbol_name: &str) -> Result<bool> {

objdiff-gui/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "objdiff-gui"
-version = "2.0.0-alpha.5"
+version = "2.0.0-beta.1"
 edition = "2021"
 rust-version = "1.70"
 authors = ["Luke Street <luke@street.dev>"]
@@ -29,6 +29,7 @@ bytes = "1.6.0"
 cfg-if = "1.0.0"
 const_format = "0.2.32"
 cwdemangle = "1.0.0"
+cwextab = "0.2.3"
 dirs = "5.0.1"
 egui = "0.27.2"
 egui_extras = "0.27.2"
@@ -41,7 +42,9 @@ notify = { git = "https://github.com/encounter/notify", rev = "4c1783e8e041b5f69
 objdiff-core = { path = "../objdiff-core", features = ["all"] }
 png = "0.17.13"
 pollster = "0.3.0"
+regex = "1.10.5"
 rfd = { version = "0.14.1" } #, default-features = false, features = ['xdg-portal']
+rlwinmdec = "1.0.1"
 ron = "0.8.1"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1.0.116"

objdiff-gui/src/app.rs

@@ -35,10 +35,12 @@ use crate::{
         data_diff::data_diff_ui,
         debug::debug_window,
         demangle::{demangle_window, DemangleViewState},
+        extab_diff::extab_diff_ui,
         frame_history::FrameHistory,
         function_diff::function_diff_ui,
         graphics::{graphics_window, GraphicsConfig, GraphicsViewState},
         jobs::jobs_ui,
+        rlwinm::{rlwinm_decode_window, RlwinmDecodeViewState},
         symbol_diff::{symbol_diff_ui, DiffViewState, View},
     },
 };
@@ -48,11 +50,13 @@ pub struct ViewState {
     pub jobs: JobQueue,
     pub config_state: ConfigViewState,
     pub demangle_state: DemangleViewState,
+    pub rlwinm_decode_state: RlwinmDecodeViewState,
     pub diff_state: DiffViewState,
     pub graphics_state: GraphicsViewState,
     pub frame_history: FrameHistory,
     pub show_appearance_config: bool,
     pub show_demangle: bool,
+    pub show_rlwinm_decode: bool,
     pub show_project_config: bool,
     pub show_arch_config: bool,
     pub show_debug: bool,
@@ -450,11 +454,13 @@ impl eframe::App for App {
             jobs,
             config_state,
             demangle_state,
+            rlwinm_decode_state,
             diff_state,
             graphics_state,
             frame_history,
             show_appearance_config,
             show_demangle,
+            show_rlwinm_decode,
             show_project_config,
             show_arch_config,
             show_debug,
@@ -513,6 +519,10 @@ impl eframe::App for App {
                         *show_demangle = !*show_demangle;
                         ui.close_menu();
                     }
+                    if ui.button("Rlwinm Decoder…").clicked() {
+                        *show_rlwinm_decode = !*show_rlwinm_decode;
+                        ui.close_menu();
+                    }
                 });
                 ui.menu_button("Diff Options", |ui| {
                     if ui.button("Arch Settings…").clicked() {
@@ -582,6 +592,10 @@ impl eframe::App for App {
             egui::CentralPanel::default().show(ctx, |ui| {
                 data_diff_ui(ui, diff_state, appearance);
             });
+        } else if diff_state.current_view == View::ExtabDiff && build_success {
+            egui::CentralPanel::default().show(ctx, |ui| {
+                extab_diff_ui(ui, diff_state, appearance);
+            });
         } else {
             egui::SidePanel::left("side_panel").show(ctx, |ui| {
                 egui::ScrollArea::both().show(ui, |ui| {
@@ -598,6 +612,7 @@ impl eframe::App for App {
         project_window(ctx, config, show_project_config, config_state, appearance);
         appearance_window(ctx, show_appearance_config, appearance);
         demangle_window(ctx, show_demangle, demangle_state, appearance);
+        rlwinm_decode_window(ctx, show_rlwinm_decode, rlwinm_decode_state, appearance);
         arch_config_window(ctx, config, show_arch_config, appearance);
         debug_window(ctx, show_debug, frame_history, appearance);
         graphics_window(ctx, show_graphics, frame_history, graphics_state, appearance);

objdiff-gui/src/views/config.rs

@@ -16,7 +16,7 @@ use egui::{
 use globset::Glob;
 use objdiff_core::{
     config::{ProjectObject, DEFAULT_WATCH_PATTERNS},
-    diff::{ArmArchVersion, MipsAbi, MipsInstrCategory, X86Formatter},
+    diff::{ArmArchVersion, ArmR9Usage, MipsAbi, MipsInstrCategory, X86Formatter},
 };
 use self_update::cargo_crate_version;
 use strum::{EnumMessage, VariantArray};
@@ -925,4 +925,51 @@ fn arch_config_ui(ui: &mut egui::Ui, config: &mut AppConfig, _appearance: &Appea
                 }
             }
         });
+    let response = ui
+        .checkbox(&mut config.diff_obj_config.arm_unified_syntax, "Unified syntax")
+        .on_hover_text("Disassemble as unified assembly language (UAL).");
+    if response.changed() {
+        config.queue_reload = true;
+    }
+    let response = ui
+        .checkbox(&mut config.diff_obj_config.arm_av_registers, "Use A/V registers")
+        .on_hover_text("Display R0-R3 as A1-A4 and R4-R11 as V1-V8");
+    if response.changed() {
+        config.queue_reload = true;
+    }
+    egui::ComboBox::new("arm_r9_usage", "Display R9 as")
+        .selected_text(config.diff_obj_config.arm_r9_usage.get_message().unwrap())
+        .show_ui(ui, |ui| {
+            for &usage in ArmR9Usage::VARIANTS {
+                if ui
+                    .selectable_label(
+                        config.diff_obj_config.arm_r9_usage == usage,
+                        usage.get_message().unwrap(),
+                    )
+                    .on_hover_text(usage.get_detailed_message().unwrap())
+                    .clicked()
+                {
+                    config.diff_obj_config.arm_r9_usage = usage;
+                    config.queue_reload = true;
+                }
+            }
+        });
+    let response = ui
+        .checkbox(&mut config.diff_obj_config.arm_sl_usage, "Display R10 as SL")
+        .on_hover_text("Used for explicit stack limits.");
+    if response.changed() {
+        config.queue_reload = true;
+    }
+    let response = ui
+        .checkbox(&mut config.diff_obj_config.arm_fp_usage, "Display R11 as FP")
+        .on_hover_text("Used for frame pointers.");
+    if response.changed() {
+        config.queue_reload = true;
+    }
+    let response = ui
+        .checkbox(&mut config.diff_obj_config.arm_ip_usage, "Display R12 as IP")
+        .on_hover_text("Used for interworking and long branches.");
+    if response.changed() {
+        config.queue_reload = true;
+    }
 }

objdiff-gui/src/views/extab_diff.rs

@@ -0,0 +1,218 @@
+use egui::{text::LayoutJob, Align, Layout, ScrollArea, Ui, Vec2};
+use egui_extras::{Size, StripBuilder};
+use objdiff_core::{
+    diff::ObjDiff,
+    obj::{ObjExtab, ObjInfo, ObjSymbol, SymbolRef},
+};
+use time::format_description;
+
+use crate::views::{
+    appearance::Appearance,
+    symbol_diff::{match_color_for_symbol, DiffViewState, SymbolRefByName, View},
+};
+
+fn find_symbol(obj: &ObjInfo, selected_symbol: &SymbolRefByName) -> Option<SymbolRef> {
+    for (section_idx, section) in obj.sections.iter().enumerate() {
+        for (symbol_idx, symbol) in section.symbols.iter().enumerate() {
+            if symbol.name == selected_symbol.symbol_name {
+                return Some(SymbolRef { section_idx, symbol_idx });
+            }
+        }
+    }
+    None
+}
+
+fn decode_extab(extab: &ObjExtab) -> String {
+    let mut text = String::from("");
+
+    let mut dtor_names: Vec<&str> = vec![];
+    for dtor in &extab.dtors {
+        //For each function name, use the demangled name by default,
+        //and if not available fallback to the original name
+        let name = match &dtor.demangled_name {
+            Some(demangled_name) => demangled_name,
+            None => &dtor.name,
+        };
+        dtor_names.push(name.as_str());
+    }
+    if let Some(decoded) = extab.data.to_string(&dtor_names) {
+        text += decoded.as_str();
+    }
+
+    text
+}
+
+fn find_extab_entry(obj: &ObjInfo, symbol: &ObjSymbol) -> Option<ObjExtab> {
+    if let Some(extab_array) = &obj.extab {
+        for extab_entry in extab_array {
+            if extab_entry.func.name == symbol.name {
+                return Some(extab_entry.clone());
+            }
+        }
+    } else {
+        return None;
+    }
+
+    None
+}
+
+fn extab_text_ui(
+    ui: &mut Ui,
+    obj: &(ObjInfo, ObjDiff),
+    symbol_ref: SymbolRef,
+    appearance: &Appearance,
+) -> Option<()> {
+    let (_section, symbol) = obj.0.section_symbol(symbol_ref);
+
+    if let Some(extab_entry) = find_extab_entry(&obj.0, symbol) {
+        let text = decode_extab(&extab_entry);
+        ui.colored_label(appearance.replace_color, &text);
+        return Some(());
+    }
+
+    None
+}
+
+fn extab_ui(
+    ui: &mut Ui,
+    obj: Option<&(ObjInfo, ObjDiff)>,
+    selected_symbol: &SymbolRefByName,
+    appearance: &Appearance,
+    _left: bool,
+) {
+    ScrollArea::both().auto_shrink([false, false]).show(ui, |ui| {
+        ui.scope(|ui| {
+            ui.style_mut().override_text_style = Some(egui::TextStyle::Monospace);
+            ui.style_mut().wrap = Some(false);
+
+            let symbol = obj.and_then(|(obj, _)| find_symbol(obj, selected_symbol));
+
+            if let (Some(object), Some(symbol_ref)) = (obj, symbol) {
+                extab_text_ui(ui, object, symbol_ref, appearance);
+            }
+        });
+    });
+}
+
+pub fn extab_diff_ui(ui: &mut egui::Ui, state: &mut DiffViewState, appearance: &Appearance) {
+    let (Some(result), Some(selected_symbol)) = (&state.build, &state.symbol_state.selected_symbol)
+    else {
+        return;
+    };
+
+    // 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);
+
+                    ui.horizontal(|ui| {
+                        if ui.button("⏴ Back").clicked() {
+                            state.current_view = View::SymbolDiff;
+                        }
+                    });
+
+                    let name = selected_symbol
+                        .demangled_symbol_name
+                        .as_deref()
+                        .unwrap_or(&selected_symbol.symbol_name);
+                    let mut job = LayoutJob::simple(
+                        name.to_string(),
+                        appearance.code_font.clone(),
+                        appearance.highlight_color,
+                        column_width,
+                    );
+                    job.wrap.break_anywhere = true;
+                    job.wrap.max_rows = 1;
+                    ui.label(job);
+
+                    ui.scope(|ui| {
+                        ui.style_mut().override_text_style = Some(egui::TextStyle::Monospace);
+                        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
+                            .add_enabled(!state.build_running, egui::Button::new("Build"))
+                            .clicked()
+                        {
+                            state.queue_build = true;
+                        }
+                        ui.scope(|ui| {
+                            ui.style_mut().override_text_style = Some(egui::TextStyle::Monospace);
+                            ui.style_mut().wrap = Some(false);
+                            if state.build_running {
+                                ui.colored_label(appearance.replace_color, "Building…");
+                            } else {
+                                ui.label("Last built:");
+                                let format =
+                                    format_description::parse("[hour]:[minute]:[second]").unwrap();
+                                ui.label(
+                                    result
+                                        .time
+                                        .to_offset(appearance.utc_offset)
+                                        .format(&format)
+                                        .unwrap(),
+                                );
+                            }
+                        });
+                    });
+
+                    ui.scope(|ui| {
+                        ui.style_mut().override_text_style = Some(egui::TextStyle::Monospace);
+                        if let Some(match_percent) = result
+                            .second_obj
+                            .as_ref()
+                            .and_then(|(obj, diff)| {
+                                find_symbol(obj, selected_symbol).map(|sref| {
+                                    &diff.sections[sref.section_idx].symbols[sref.symbol_idx]
+                                })
+                            })
+                            .and_then(|symbol| symbol.match_percent)
+                        {
+                            ui.colored_label(
+                                match_color_for_symbol(match_percent, appearance),
+                                &format!("{match_percent:.0}%"),
+                            );
+                        } else {
+                            ui.colored_label(appearance.replace_color, "Missing");
+                        }
+                        ui.label("Diff base:");
+                    });
+                },
+            );
+        },
+    );
+    ui.separator();
+
+    // Table
+    StripBuilder::new(ui).size(Size::remainder()).vertical(|mut strip| {
+        strip.strip(|builder| {
+            builder.sizes(Size::remainder(), 2).horizontal(|mut strip| {
+                strip.cell(|ui| {
+                    extab_ui(ui, result.first_obj.as_ref(), selected_symbol, appearance, true);
+                });
+                strip.cell(|ui| {
+                    extab_ui(ui, result.second_obj.as_ref(), selected_symbol, appearance, false);
+                });
+            });
+        });
+    });
+}

objdiff-gui/src/views/mod.rs

@@ -5,11 +5,13 @@ pub(crate) mod config;
 pub(crate) mod data_diff;
 pub(crate) mod debug;
 pub(crate) mod demangle;
+pub(crate) mod extab_diff;
 pub(crate) mod file;
 pub(crate) mod frame_history;
 pub(crate) mod function_diff;
 pub(crate) mod graphics;
 pub(crate) mod jobs;
+pub(crate) mod rlwinm;
 pub(crate) mod symbol_diff;
 
 #[inline]

objdiff-gui/src/views/rlwinm.rs

@@ -0,0 +1,34 @@
+use egui::TextStyle;
+
+use crate::views::appearance::Appearance;
+
+#[derive(Default)]
+pub struct RlwinmDecodeViewState {
+    pub text: String,
+}
+
+pub fn rlwinm_decode_window(
+    ctx: &egui::Context,
+    show: &mut bool,
+    state: &mut RlwinmDecodeViewState,
+    appearance: &Appearance,
+) {
+    egui::Window::new("Rlwinm Decoder").open(show).show(ctx, |ui| {
+        ui.text_edit_singleline(&mut state.text);
+        ui.add_space(10.0);
+        if let Some(demangled) = rlwinmdec::decode(&state.text) {
+            ui.scope(|ui| {
+                ui.style_mut().override_text_style = Some(TextStyle::Monospace);
+                ui.colored_label(appearance.replace_color, &demangled);
+            });
+            if ui.button("Copy").clicked() {
+                ui.output_mut(|output| output.copied_text = demangled);
+            }
+        } else {
+            ui.scope(|ui| {
+                ui.style_mut().override_text_style = Some(TextStyle::Monospace);
+                ui.colored_label(appearance.replace_color, "[invalid]");
+            });
+        }
+    });
+}

objdiff-gui/src/views/symbol_diff.rs

@@ -9,6 +9,7 @@ use objdiff_core::{
     diff::{ObjDiff, ObjSymbolDiff},
     obj::{ObjInfo, ObjSection, ObjSectionKind, ObjSymbol, ObjSymbolFlags, SymbolRef},
 };
+use regex::{Regex, RegexBuilder};
 
 use crate::{
     app::AppConfigRef,
@@ -33,6 +34,7 @@ pub enum View {
     SymbolDiff,
     FunctionDiff,
     DataDiff,
+    ExtabDiff,
 }
 
 #[derive(Default)]
@@ -43,6 +45,7 @@ pub struct DiffViewState {
     pub symbol_state: SymbolViewState,
     pub function_state: FunctionViewState,
     pub search: String,
+    pub search_regex: Option<Regex>,
     pub queue_build: bool,
     pub build_running: bool,
     pub scratch_available: bool,
@@ -57,6 +60,7 @@ pub struct SymbolViewState {
     pub reverse_fn_order: bool,
     pub disable_reverse_fn_order: bool,
     pub show_hidden_symbols: bool,
+    pub queue_extab_decode: bool,
 }
 
 impl DiffViewState {
@@ -131,7 +135,12 @@ pub fn match_color_for_symbol(match_percent: f32, appearance: &Appearance) -> Co
     }
 }
 
-fn symbol_context_menu_ui(ui: &mut Ui, symbol: &ObjSymbol) {
+fn symbol_context_menu_ui(
+    ui: &mut Ui,
+    state: &mut SymbolViewState,
+    symbol: &ObjSymbol,
+    section: Option<&ObjSection>,
+) {
     ui.scope(|ui| {
         ui.style_mut().override_text_style = Some(egui::TextStyle::Monospace);
         ui.style_mut().wrap = Some(false);
@@ -152,6 +161,17 @@ fn symbol_context_menu_ui(ui: &mut Ui, symbol: &ObjSymbol) {
                 ui.close_menu();
             }
         }
+        if let Some(section) = section {
+            if symbol.has_extab && ui.button("Decode exception table").clicked() {
+                state.queue_extab_decode = true;
+                state.selected_symbol = Some(SymbolRefByName {
+                    symbol_name: symbol.name.clone(),
+                    demangled_symbol_name: symbol.demangled_name.clone(),
+                    section_name: section.name.clone(),
+                });
+                ui.close_menu();
+            }
+        }
     });
 }
 
@@ -173,6 +193,20 @@ fn symbol_hover_ui(ui: &mut Ui, symbol: &ObjSymbol, appearance: &Appearance) {
         if let Some(address) = symbol.virtual_address {
             ui.colored_label(appearance.replace_color, format!("Virtual address: {:#x}", address));
         }
+        if symbol.has_extab {
+            if let (Some(extab_name), Some(extabindex_name)) =
+                (&symbol.extab_name, &symbol.extabindex_name)
+            {
+                ui.colored_label(
+                    appearance.highlight_color,
+                    format!("Extab Symbol: {}", extab_name),
+                );
+                ui.colored_label(
+                    appearance.highlight_color,
+                    format!("Extabindex Symbol: {}", extabindex_name),
+                );
+            }
+        }
     });
 }
 
@@ -228,7 +262,7 @@ fn symbol_ui(
     let response = SelectableLabel::new(selected, job)
         .ui(ui)
         .on_hover_ui_at_pointer(|ui| symbol_hover_ui(ui, symbol, appearance));
-    response.context_menu(|ui| symbol_context_menu_ui(ui, symbol));
+    response.context_menu(|ui| symbol_context_menu_ui(ui, state, symbol, section));
     if response.clicked() {
         if let Some(section) = section {
             if section.kind == ObjSectionKind::Code {
@@ -258,17 +292,23 @@ fn symbol_ui(
             (None, None)
         };
     }
+
+    //If the decode extab context menu option was clicked, switch to the extab view
+    if state.queue_extab_decode {
+        ret = Some(View::ExtabDiff);
+        state.queue_extab_decode = false;
+    }
+
     ret
 }
 
-fn symbol_matches_search(symbol: &ObjSymbol, search_str: &str) -> bool {
+fn symbol_matches_search(symbol: &ObjSymbol, search_regex: Option<&Regex>) -> bool {
-    search_str.is_empty()
+    if let Some(search_regex) = search_regex {
-        || symbol.name.contains(search_str)
+        search_regex.is_match(&symbol.name)
-        || symbol
+            || symbol.demangled_name.as_ref().map(|s| search_regex.is_match(s)).unwrap_or(false)
-            .demangled_name
+    } else {
-            .as_ref()
+        true
-            .map(|s| s.to_ascii_lowercase().contains(search_str))
+    }
-            .unwrap_or(false)
 }
 
 #[must_use]
@@ -276,7 +316,7 @@ fn symbol_list_ui(
     ui: &mut Ui,
     obj: &(ObjInfo, ObjDiff),
     state: &mut SymbolViewState,
-    lower_search: &str,
+    search_regex: Option<&Regex>,
     appearance: &Appearance,
     left: bool,
 ) -> Option<View> {
@@ -289,6 +329,9 @@ fn symbol_list_ui(
             if !obj.0.common.is_empty() {
                 CollapsingHeader::new(".comm").default_open(true).show(ui, |ui| {
                     for (symbol, symbol_diff) in obj.0.common.iter().zip(&obj.1.common) {
+                        if !symbol_matches_search(symbol, search_regex) {
+                            continue;
+                        }
                         ret = ret.or(symbol_ui(
                             ui,
                             symbol,
@@ -336,7 +379,7 @@ fn symbol_list_ui(
                             for (symbol, symbol_diff) in
                                 section.symbols.iter().zip(&section_diff.symbols).rev()
                             {
-                                if !symbol_matches_search(symbol, lower_search) {
+                                if !symbol_matches_search(symbol, search_regex) {
                                     continue;
                                 }
                                 ret = ret.or(symbol_ui(
@@ -353,7 +396,7 @@ fn symbol_list_ui(
                             for (symbol, symbol_diff) in
                                 section.symbols.iter().zip(&section_diff.symbols)
                             {
-                                if !symbol_matches_search(symbol, lower_search) {
+                                if !symbol_matches_search(symbol, search_regex) {
                                     continue;
                                 }
                                 ret = ret.or(symbol_ui(
@@ -407,7 +450,7 @@ fn missing_obj_ui(ui: &mut Ui, appearance: &Appearance) {
 }
 
 pub fn symbol_diff_ui(ui: &mut Ui, state: &mut DiffViewState, appearance: &Appearance) {
-    let DiffViewState { build, current_view, symbol_state, search, .. } = state;
+    let DiffViewState { build, current_view, symbol_state, search, search_regex, .. } = state;
     let Some(result) = build else {
         return;
     };
@@ -442,7 +485,17 @@ pub fn symbol_diff_ui(ui: &mut Ui, state: &mut DiffViewState, appearance: &Appea
                         }
                     });
 
-                    TextEdit::singleline(search).hint_text("Filter symbols").ui(ui);
+                    if TextEdit::singleline(search).hint_text("Filter symbols").ui(ui).changed() {
+                        if search.is_empty() {
+                            *search_regex = None;
+                        } else if let Ok(regex) =
+                            RegexBuilder::new(search).case_insensitive(true).build()
+                        {
+                            *search_regex = Some(regex);
+                        } else {
+                            *search_regex = None;
+                        }
+                    }
                 },
             );
 
@@ -480,7 +533,6 @@ pub fn symbol_diff_ui(ui: &mut Ui, state: &mut DiffViewState, appearance: &Appea
 
     // Table
     let mut ret = None;
-    let lower_search = search.to_ascii_lowercase();
     StripBuilder::new(ui).size(Size::remainder()).vertical(|mut strip| {
         strip.strip(|builder| {
             builder.sizes(Size::remainder(), 2).horizontal(|mut strip| {
@@ -492,7 +544,7 @@ pub fn symbol_diff_ui(ui: &mut Ui, state: &mut DiffViewState, appearance: &Appea
                                     ui,
                                     obj,
                                     symbol_state,
-                                    &lower_search,
+                                    search_regex.as_ref(),
                                     appearance,
                                     true,
                                 ));
@@ -512,7 +564,7 @@ pub fn symbol_diff_ui(ui: &mut Ui, state: &mut DiffViewState, appearance: &Appea
                                     ui,
                                     obj,
                                     symbol_state,
-                                    &lower_search,
+                                    search_regex.as_ref(),
                                     appearance,
                                     false,
                                 ));