Increases the number of ARM floating-point registers.

runtime/vm/simulator_arm.cc

 // 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.
 
 #include <math.h>  // for isnan.
 #include <setjmp.h>
 #include <stdlib.h>
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_ARM)
@@ skipping 2486 matching lines @@
             set_sregister_bits(sd, ReadW(addr, instr));
           } else {
             // Format(instr, "vstms'cond'pu 'rn'w, 'slist");
             WriteW(addr, get_sregister_bits(sd), instr);
           }
           addr += 4;
         }
       } else {
         int32_t regs_cnt = imm_val >> 1;
         int32_t start = (instr->Bit(22) << 4) | instr->Bits(12, 4);
-        for (int i = start; i < start + regs_cnt; i++) {
-          DRegister dd = static_cast<DRegister>(i);
-          if (instr->Bit(20) == 1) {
-            // Format(instr, "vldmd'cond'pu 'rn'w, 'dlist");
-            int64_t dd_val = Utils::LowHighTo64Bits(ReadW(addr, instr),
-                                                    ReadW(addr + 4, instr));
-            set_dregister_bits(dd, dd_val);
-          } else {
-            // Format(instr, "vstmd'cond'pu 'rn'w, 'dlist");
-            int64_t dd_val = get_dregister_bits(dd);
-            WriteW(addr, Utils::Low32Bits(dd_val), instr);
-            WriteW(addr + 4, Utils::High32Bits(dd_val), instr);
+        if ((regs_cnt <= 16) && (start + regs_cnt <= kNumberOfDRegisters)) {
+          for (int i = start; i < start + regs_cnt; i++) {
+            DRegister dd = static_cast<DRegister>(i);
+            if (instr->Bit(20) == 1) {
+              // Format(instr, "vldmd'cond'pu 'rn'w, 'dlist");
+              int64_t dd_val = Utils::LowHighTo64Bits(ReadW(addr, instr),
+                                                      ReadW(addr + 4, instr));
+              set_dregister_bits(dd, dd_val);
+            } else {
+              // Format(instr, "vstmd'cond'pu 'rn'w, 'dlist");
+              int64_t dd_val = get_dregister_bits(dd);
+              WriteW(addr, Utils::Low32Bits(dd_val), instr);
+              WriteW(addr + 4, Utils::High32Bits(dd_val), instr);
+            }
+            addr += 8;
           }
-          addr += 8;
+        } else {
+          UnimplementedInstruction(instr);
         }
       }
     }
   } else {
     UnimplementedInstruction(instr);
   }
 }
 
 
 void Simulator::DecodeType7(Instr* instr) {
@@ skipping 1095 matching lines @@
   set_register(kExceptionObjectReg, bit_cast<int32_t>(raw_exception));
   set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace));
   buf->Longjmp();
 }
 
 }  // namespace dart
 
 #endif  // !defined(HOST_ARCH_ARM)
 
 #endif  // defined TARGET_ARCH_ARM