[heap] Disallow allocation on the last page in address range

src/arm/macro-assembler-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #if V8_TARGET_ARCH_ARM
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
@@ skipping 2054 matching lines @@
   int shift = 0;
   while (object_size != 0) {
     if (((object_size >> shift) & 0x03) == 0) {
       shift += 2;
     } else {
       int bits = object_size & (0xff << shift);
       object_size -= bits;
       shift += 8;
       Operand bits_operand(bits);
       DCHECK(bits_operand.instructions_required(this) == 1);
-      add(result_end, source, bits_operand, SetCC, cond);
+      add(result_end, source, bits_operand, LeaveCC, cond);
       source = result_end;
       cond = cc;
     }
   }
-  b(cs, gc_required);
   cmp(result_end, Operand(alloc_limit));
   b(hi, gc_required);
   str(result_end, MemOperand(top_address));
 
   // Tag object if requested.
   if ((flags & TAG_OBJECT) != 0) {
     add(result, result, Operand(kHeapObjectTag));
   }
 }
 
@@ skipping 1855 matching lines @@
     }
   }
   if (mag.shift > 0) mov(result, Operand(result, ASR, mag.shift));
   add(result, result, Operand(dividend, LSR, 31));
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM