[Lldb-commits] [PATCH] D11065: Skip oatdata and oatexec symbols in system at framework@boot.oat

Tamas Berghammer tberghammer at google.com
Mon Jul 13 02:54:55 PDT 2015

This revision was automatically updated to reflect the committed changes.
Closed by commit rL242017: Skip oatdata and oatexec symbols in system at framework@boot.oat (authored by tberghammer).

Changed prior to commit:




Index: lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
--- lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
+++ lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
@@ -1795,7 +1795,16 @@
     static ConstString bss_section_name(".bss");
     static ConstString opd_section_name(".opd");    // For ppc64
-    //StreamFile strm(stdout, false);
+    // On Android the oatdata and the oatexec symbols in system at framework@boot.oat covers the full
+    // .text section what causes issues with displaying unusable symbol name to the user and very
+    // slow unwinding speed because the instruction emulation based unwind plans try to emulate all
+    // instructions in these symbols. Don't add these symbols to the symbol list as they have no
+    // use for the debugger and they are causing a lot of trouble.
+    // Filtering can't be restricted to Android because this special object file don't contain the
+    // note section specifying the environment to Android but the custom extension and file name
+    // makes it highly unlikely that this will collide with anything else.
+    bool skip_oatdata_oatexec = m_file.GetFilename() == ConstString("system at framework@boot.oat");
     unsigned i;
     for (i = 0; i < num_symbols; ++i)
@@ -1809,7 +1818,10 @@
             (symbol_name == NULL || symbol_name[0] == '\0'))
-        //symbol.Dump (&strm, i, &strtab_data, section_list);
+        // Skipping oatdata and oatexec sections if it is requested. See details above the
+        // definition of skip_oatdata_oatexec for the reasons.
+        if (skip_oatdata_oatexec && (::strcmp(symbol_name, "oatdata") == 0 || ::strcmp(symbol_name, "oatexec") == 0))
+            continue;
         SectionSP symbol_section_sp;
         SymbolType symbol_type = eSymbolTypeInvalid;

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