[builtins] Introduce a builtin for Abort().

src/x64/macro-assembler-x64.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.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 619 matching lines @@
   if (msg != NULL) {
     RecordComment("Abort message: ");
     RecordComment(msg);
   }
 
   if (FLAG_trap_on_abort) {
     int3();
     return;
   }
 #endif
-
-  Move(kScratchRegister, Smi::FromInt(static_cast<int>(reason)),
-       Assembler::RelocInfoNone());
-  Push(kScratchRegister);
+  // Check if Abort() has already been initialized.

[Michael Starzinger, 2016/07/18 08:51:11]

nit: Empty newline before this block for readability.

[ahaas, 2016/07/18 09:04:17]

Done

+  DCHECK(isolate()->builtins()->Abort()->IsHeapObject());
+  Move(rdx, Smi::FromInt(static_cast<int>(reason)));
 
   if (!has_frame_) {
     // We don't actually want to generate a pile of code for this, so just
     // claim there is a stack frame, without generating one.
     FrameScope scope(this, StackFrame::NONE);
-    CallRuntime(Runtime::kAbort);
+    Call(isolate()->builtins()->Abort(), RelocInfo::CODE_TARGET);
   } else {
-    CallRuntime(Runtime::kAbort);
+    Call(isolate()->builtins()->Abort(), RelocInfo::CODE_TARGET);
   }
   // Control will not return here.
   int3();
 }
 
 
 void MacroAssembler::CallStub(CodeStub* stub, TypeFeedbackId ast_id) {
   DCHECK(AllowThisStubCall(stub));  // Calls are not allowed in some stubs
   Call(stub->GetCode(), RelocInfo::CODE_TARGET, ast_id);
 }
@@ skipping 5114 matching lines @@
   movl(rax, dividend);
   shrl(rax, Immediate(31));
   addl(rdx, rax);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64