Return a current executable's directory from HostInfoAndroid::ComputeSupportExeDirectory.

[ovyalov]

Summary

HostInfoPosix::ComputeSupportExeDirectory doesn't work on Android because it tries to lookup lldb.so (which doesn't exist on Android since lldb-server uses static linking) and then replaces "/lib" path entry with "/bin".
Since on Android we use the same binary as platform and llgs ComputeSupportExeDirectory can return a current executable's directory.

[ovyalov]

AFFECTED FILES

/lldb/trunk/include/lldb/Host/android/HostInfoAndroid.h
/lldb/trunk/source/Host/android/HostInfoAndroid.cpp

USERS

ovyalov (Author)

http://reviews.llvm.org/rL230604

include/lldb/Host/android/HostInfoAndroid.h

class HostInfoAndroid : public HostInfoLinux
 
   private:
     // Static class, unconstructable.
     HostInfoAndroid();
     ~HostInfoAndroid();
 
   protected:
     static void ComputeHostArchitectureSupport(ArchSpec &arch_32, ArchSpec &arch_64);
+    static bool ComputeSupportExeDirectory(FileSpec &file_spec);
 };
 
 } // end of namespace lldb_private
 
 #endif // #ifndef lldb_Host_android_HostInfoAndroid_h_

source/Host/android/HostInfoAndroid.cpp

HostInfoAndroid::ComputeHostArchitectureSupport(ArchSpec &arch_32, ArchSpec &arch_64)
     {
         arch_32.GetTriple().setEnvironment(llvm::Triple::Android);
     }
     if (arch_64.IsValid())
     {
         arch_64.GetTriple().setEnvironment(llvm::Triple::Android);
     }
 }
+
+bool
+HostInfoAndroid::ComputeSupportExeDirectory(FileSpec &file_spec)
+{
+    file_spec.GetDirectory() = HostInfoLinux::GetProgramFileSpec().GetDirectory();
+    return (bool)file_spec.GetDirectory();
+}