diff --git a/compiler/utils/x86/assembler_x86.cc b/compiler/utils/x86/assembler_x86.cc
index 83584a2..3f266fe 100644
--- a/compiler/utils/x86/assembler_x86.cc
+++ b/compiler/utils/x86/assembler_x86.cc
@@ -409,6 +409,13 @@
 }
 
 
+void X86Assembler::fsts(const Address& dst) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0xD9);
+  EmitOperand(2, dst);
+}
+
+
 void X86Assembler::fstps(const Address& dst) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0xD9);
@@ -719,6 +726,13 @@
 }
 
 
+void X86Assembler::fstl(const Address& dst) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0xDD);
+  EmitOperand(2, dst);
+}
+
+
 void X86Assembler::fstpl(const Address& dst) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0xDD);
@@ -726,6 +740,14 @@
 }
 
 
+void X86Assembler::fstsw() {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x9B);
+  EmitUint8(0xDF);
+  EmitUint8(0xE0);
+}
+
+
 void X86Assembler::fnstcw(const Address& dst) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0xD9);
@@ -797,6 +819,20 @@
 }
 
 
+void X86Assembler::fucompp() {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0xDA);
+  EmitUint8(0xE9);
+}
+
+
+void X86Assembler::fprem() {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0xD9);
+  EmitUint8(0xF8);
+}
+
+
 void X86Assembler::xchgl(Register dst, Register src) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0x87);