Make arguments adaptor not clobber new.target.

src/arm64/builtins-arm64.cc

 // Copyright 2013 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_ARM64
 
 #include "src/arm64/frames-arm64.h"
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
@@ skipping 1409 matching lines @@
   Generate_ConstructHelper(masm);
 }
 
 
 static void ArgumentAdaptorStackCheck(MacroAssembler* masm,
                                       Label* stack_overflow) {
   // ----------- S t a t e -------------
   //  -- x0 : actual number of arguments
   //  -- x1 : function (passed through to callee)
   //  -- x2 : expected number of arguments
+  //  -- x3 : new target (passed through to callee)
   // -----------------------------------
   // Check the stack for overflow.
   // We are not trying to catch interruptions (e.g. debug break and
   // preemption) here, so the "real stack limit" is checked.
   Label enough_stack_space;
   __ LoadRoot(x10, Heap::kRealStackLimitRootIndex);
   // Make x10 the space we have left. The stack might already be overflowed
   // here which will cause x10 to become negative.
   __ Sub(x10, jssp, x10);
   // Check if the arguments will overflow the stack.
@@ skipping 330 matching lines @@
   __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CONSTRUCT_CALL);
 }
 
 
 void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
   ASM_LOCATION("Builtins::Generate_ArgumentsAdaptorTrampoline");
   // ----------- S t a t e -------------
   //  -- x0 : actual number of arguments
   //  -- x1 : function (passed through to callee)
   //  -- x2 : expected number of arguments
+  //  -- x3 : new target (passed through to callee)
   // -----------------------------------
 
-  Label stack_overflow;
-  ArgumentAdaptorStackCheck(masm, &stack_overflow);
-
   Register argc_actual = x0;  // Excluding the receiver.
   Register argc_expected = x2;  // Excluding the receiver.
   Register function = x1;
-  Register code_entry = x3;
+  Register code_entry = x10;
 
-  Label invoke, dont_adapt_arguments;
+  Label invoke, dont_adapt_arguments, stack_overflow;
 
   Label enough, too_few;
-  __ Ldr(code_entry, FieldMemOperand(function, JSFunction::kCodeEntryOffset));
   __ Cmp(argc_actual, argc_expected);
   __ B(lt, &too_few);
   __ Cmp(argc_expected, SharedFunctionInfo::kDontAdaptArgumentsSentinel);
   __ B(eq, &dont_adapt_arguments);
 
   {  // Enough parameters: actual >= expected
     EnterArgumentsAdaptorFrame(masm);
+    ArgumentAdaptorStackCheck(masm, &stack_overflow);
 
     Register copy_start = x10;
     Register copy_end = x11;
     Register copy_to = x12;
     Register scratch1 = x13, scratch2 = x14;
 
     __ Lsl(scratch2, argc_expected, kPointerSizeLog2);
 
     // Adjust for fp, lr, and the receiver.
     __ Add(copy_start, fp, 3 * kPointerSize);
@@ skipping 50 matching lines @@
     __ B(ge, &no_strong_error);
 
     {
       FrameScope frame(masm, StackFrame::MANUAL);
       EnterArgumentsAdaptorFrame(masm);
       __ CallRuntime(Runtime::kThrowStrongModeTooFewArguments, 0);
     }
 
     __ Bind(&no_strong_error);
     EnterArgumentsAdaptorFrame(masm);
+    ArgumentAdaptorStackCheck(masm, &stack_overflow);
 
     __ Lsl(scratch2, argc_expected, kPointerSizeLog2);
     __ Lsl(argc_actual, argc_actual, kPointerSizeLog2);
 
     // Adjust for fp, lr, and the receiver.
     __ Add(copy_from, fp, 3 * kPointerSize);
     __ Add(copy_from, copy_from, argc_actual);
     __ Mov(copy_to, jssp);
     __ Sub(copy_end, copy_to, 1 * kPointerSize);   // Adjust for the receiver.
     __ Sub(copy_end, copy_end, argc_actual);
@@ skipping 29 matching lines @@
 
     // Correct the space allocated for the extra slot.
     __ Drop(1);
   }
 
   // Arguments have been adapted. Now call the entry point.
   __ Bind(&invoke);
   __ Mov(argc_actual, argc_expected);
   // x0 : expected number of arguments
   // x1 : function (passed through to callee)
+  // x3 : new target (passed through to callee)
+  __ Ldr(code_entry, FieldMemOperand(function, JSFunction::kCodeEntryOffset));
   __ Call(code_entry);
 
   // Store offset of return address for deoptimizer.
   masm->isolate()->heap()->SetArgumentsAdaptorDeoptPCOffset(masm->pc_offset());
 
   // Exit frame and return.
   LeaveArgumentsAdaptorFrame(masm);
   __ Ret();
 
   // Call the entry point without adapting the arguments.
   __ Bind(&dont_adapt_arguments);
+  __ Ldr(code_entry, FieldMemOperand(function, JSFunction::kCodeEntryOffset));
   __ Jump(code_entry);
 
   __ Bind(&stack_overflow);
   {
     FrameScope frame(masm, StackFrame::MANUAL);
-    EnterArgumentsAdaptorFrame(masm);
     __ CallRuntime(Runtime::kThrowStackOverflow, 0);
     __ Unreachable();
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM