Adds muls, sdiv, udiv instructions to ARM simulator, assembler, disassembler

runtime/vm/assembler_arm.h

Index: runtime/vm/assembler_arm.h
===================================================================
--- runtime/vm/assembler_arm.h	(revision 19488)
+++ runtime/vm/assembler_arm.h	(working copy)
@@ -390,6 +390,7 @@
 
   // Multiply instructions.
   void mul(Register rd, Register rn, Register rm, Condition cond = AL);
+  void muls(Register rd, Register rn, Register rm, Condition cond = AL);
   void mla(Register rd, Register rn, Register rm, Register ra,
            Condition cond = AL);
   void mls(Register rd, Register rn, Register rm, Register ra,
@@ -397,6 +398,10 @@
   void umull(Register rd_lo, Register rd_hi, Register rn, Register rm,
              Condition cond = AL);
 
+  // Division instructions.
+  void sdiv(Register rd, Register rn, Register rm, Condition cond = AL);
+  void udiv(Register rd, Register rn, Register rm, Condition cond = AL);
+
   // Load/store instructions.
   void ldr(Register rd, Address ad, Condition cond = AL);
   void str(Register rd, Address ad, Condition cond = AL);
@@ -706,6 +711,12 @@
                  Register rm,
                  Register rs);
 
+  void EmitDivOp(Condition cond,
+                 int32_t opcode,
+                 Register rd,
+                 Register rn,
+                 Register rm);
+
   void EmitMultiVSMemOp(Condition cond,
                         BlockAddressMode am,
                         bool load,