Change constant pool marker to be the unconditional, permanently undefined instruction.

src/arm/assembler-arm.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 2712 matching lines @@
     BlockConstPoolScope block_const_pool(this);
     RecordComment("[ Constant Pool");
     RecordConstPool(size);
 
     // Emit jump over constant pool if necessary.
     Label after_pool;
     if (require_jump) {
       b(&after_pool);
     }
 
-    // Put down constant pool marker "Undefined instruction" as specified by
-    // A5.6 (ARMv7) Instruction set encoding.
-    emit(kConstantPoolMarker | num_pending_reloc_info_);
+    // Put down constant pool marker "Undefined instruction".
+    emit(kConstantPoolMarker |
+         EncodeConstantPoolLength(num_pending_reloc_info_));
 
     // Emit constant pool entries.
     for (int i = 0; i < num_pending_reloc_info_; i++) {
       RelocInfo& rinfo = pending_reloc_info_[i];
       ASSERT(rinfo.rmode() != RelocInfo::COMMENT &&
              rinfo.rmode() != RelocInfo::POSITION &&
              rinfo.rmode() != RelocInfo::STATEMENT_POSITION &&
              rinfo.rmode() != RelocInfo::CONST_POOL);
 
       Instr instr = instr_at(rinfo.pc());
@@ skipping 26 matching lines @@
 
   // Since a constant pool was just emitted, move the check offset forward by
   // the standard interval.
   next_buffer_check_ = pc_offset() + kCheckPoolInterval;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM