hide except_data symbols

Author: rjkiv

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

@@ -358,7 +358,22 @@ impl Arch for ArchPpc {
     }
 
     fn extra_symbol_flags(&self, symbol: &object::Symbol) -> SymbolFlagSet {
-        if self.extab.as_ref().is_some_and(|extab| extab.contains_key(&(symbol.index().0 - 1))) {
+        // X360 COFFs should automatically hide all symbols starting with "except_data",
+        // because those are not functions - they're pointers to exception data structs
+        if self.extensions.eq(&powerpc::Extensions::xenon()) {
+            match symbol.name() {
+                Ok(name) => {
+                    if name.starts_with("except_data_"){
+                        SymbolFlag::Hidden.into()
+                    }
+                    else {
+                        SymbolFlag::none()
+                    }
+                }
+                Err(_) => { SymbolFlag::none() }
+            } 
+        }
+        else if self.extab.as_ref().is_some_and(|extab| extab.contains_key(&(symbol.index().0 - 1))) {
             SymbolFlag::HasExtra.into()
         } else {
             SymbolFlag::none()