A few fixes for ARMv5TE.

runtime/vm/assembler_arm.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_ASSEMBLER_ARM_H_
 #define VM_ASSEMBLER_ARM_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_arm.h directly; use assembler.h instead.
 #endif
@@ skipping 440 matching lines @@
 
   void ldrb(Register rd, Address ad, Condition cond = AL);
   void strb(Register rd, Address ad, Condition cond = AL);
 
   void ldrh(Register rd, Address ad, Condition cond = AL);
   void strh(Register rd, Address ad, Condition cond = AL);
 
   void ldrsb(Register rd, Address ad, Condition cond = AL);
   void ldrsh(Register rd, Address ad, Condition cond = AL);
 
-  void ldrd(Register rd, Address ad, Condition cond = AL);
-  void strd(Register rd, Address ad, Condition cond = AL);
+  // ldrd and strd actually support the full range of addressing modes, but
+  // we don't use them, and we need to split them up into two instructions for
+  // ARMv5TE, so we only support the base + offset mode.
+  void ldrd(Register rd, Register rn, int32_t offset, Condition cond = AL);
+  void strd(Register rd, Register rn, int32_t offset, Condition cond = AL);
 
   void ldm(BlockAddressMode am, Register base,
            RegList regs, Condition cond = AL);
   void stm(BlockAddressMode am, Register base,
            RegList regs, Condition cond = AL);
 
   void ldrex(Register rd, Register rn, Condition cond = AL);
   void strex(Register rd, Register rt, Register rn, Condition cond = AL);
 
   // Miscellaneous instructions.
@@ skipping 155 matching lines @@
   void CompareImmediate(Register rn, int32_t value, Condition cond = AL);
 
 
   // Signed integer division of left by right. Checks to see if integer
   // division is supported. If not, uses the FPU for division with
   // temporary registers tmpl and tmpr. tmpl and tmpr must be different
   // registers.
   void IntegerDivide(Register result, Register left, Register right,
                      DRegister tmpl, DRegister tmpr);
 
-  // If we aren't on ARMv7, there is no smull.
-  void CheckMultSignedOverflow(Register left,
-                               Register right,
-                               Register tmp,
-                               DRegister dtmp0, DRegister dtmp1,
-                               Label* overflow);
-
   // Load and Store.
   // These three do not clobber IP.
   void LoadPatchableImmediate(Register rd, int32_t value, Condition cond = AL);
   void LoadDecodableImmediate(Register rd, int32_t value, Condition cond = AL);
   void LoadImmediate(Register rd, int32_t value, Condition cond = AL);
   // These two may clobber IP.
   void LoadSImmediate(SRegister sd, float value, Condition cond = AL);
   void LoadDImmediate(DRegister dd, double value,
                       Register scratch, Condition cond = AL);
 
@@ skipping 464 matching lines @@
                      Register new_value,
                      FieldContent old_content);
 
   DISALLOW_ALLOCATION();
   DISALLOW_COPY_AND_ASSIGN(Assembler);
 };
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_ARM_H_