--- old/src/cpu/x86/vm/assembler_x86.cpp	2016-01-08 17:22:29.179519900 -0800
+++ new/src/cpu/x86/vm/assembler_x86.cpp	2016-01-08 17:22:28.836519900 -0800
@@ -1891,6 +1891,12 @@
   emit_int8((unsigned char)(0xF0 | encode));
 }
 
+void Assembler::imull(Register src) {
+  int encode = prefix_and_encode(src->encoding());
+  emit_int8((unsigned char)0xF7);
+  emit_int8((unsigned char)(0xE8 | encode));
+}
+
 void Assembler::imull(Register dst, Register src) {
   int encode = prefix_and_encode(dst->encoding(), src->encoding());
   emit_int8(0x0F);
@@ -4112,6 +4118,14 @@
   emit_arith_b(0xF6, 0xC0, dst, imm8);
 }
 
+void Assembler::testb(Address dst, int imm8) {
+  InstructionMark im(this);
+  prefix(dst);
+  emit_int8((unsigned char)0xF6);
+  emit_operand(rax, dst, 1);
+  emit_int8(imm8);
+}
+
 void Assembler::testl(Register dst, int32_t imm32) {
   // not using emit_arith because test
   // doesn't support sign-extension of