includes: sort all includes
diff --git a/src/sim/syscall_emul.cc b/src/sim/syscall_emul.cc
index 506b22f..76fa8a2 100644
--- a/src/sim/syscall_emul.cc
+++ b/src/sim/syscall_emul.cc
@@ -37,16 +37,16 @@
 #include <string>
 
 #include "arch/utility.hh"
-#include "sim/syscall_emul.hh"
 #include "base/chunk_generator.hh"
 #include "base/trace.hh"
 #include "config/the_isa.hh"
-#include "cpu/thread_context.hh"
 #include "cpu/base.hh"
+#include "cpu/thread_context.hh"
 #include "mem/page_table.hh"
 #include "sim/process.hh"
-#include "sim/system.hh"
 #include "sim/sim_exit.hh"
+#include "sim/syscall_emul.hh"
+#include "sim/system.hh"
 
 using namespace std;
 using namespace TheISA;