[heap] Remove max executable size configuration.

src/mips/assembler-mips.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 3531 matching lines @@
       return 0;
     }
   }
 }
 
 
 void Assembler::GrowBuffer() {
   if (!own_buffer_) FATAL("external code buffer is too small");
 
   // Compute new buffer size.
-  CodeDesc desc;  // The new buffer.
+  CodeDesc desc;  // the new buffer
   if (buffer_size_ < 1 * MB) {
     desc.buffer_size = 2*buffer_size_;
   } else {
     desc.buffer_size = buffer_size_ + 1*MB;
   }
-  CHECK_GT(desc.buffer_size, 0);  // No overflow.
+
+  // Some internal data structures overflow for very large buffers,
+  // they must ensure that kMaximalBufferSize is not too large.
+  if (desc.buffer_size > kMaximalBufferSize ||
+      static_cast<size_t>(desc.buffer_size) >
+          isolate_data().max_old_generation_size_) {
+    V8::FatalProcessOutOfMemory("Assembler::GrowBuffer");
+  }
 
   // Set up new buffer.
   desc.buffer = NewArray<byte>(desc.buffer_size);
   desc.origin = this;
 
   desc.instr_size = pc_offset();
   desc.reloc_size = (buffer_ + buffer_size_) - reloc_info_writer.pos();
 
   // Copy the data.
   int pc_delta = desc.buffer - buffer_;
@@ skipping 252 matching lines @@
 
   if (icache_flush_mode != SKIP_ICACHE_FLUSH) {
     Assembler::FlushICache(isolate, pc, 2 * sizeof(int32_t));
   }
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS