[sim] Consistent support for C calls with up to 9 args

src/macro-assembler.h

 // 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.
 
 #ifndef V8_MACRO_ASSEMBLER_H_
 #define V8_MACRO_ASSEMBLER_H_
 
 #include "src/assembler-inl.h"
 
 // Helper types to make boolean flag easier to read at call-site.
@@ skipping 47 matching lines @@
 #include "src/s390/macro-assembler-s390.h"
 #elif V8_TARGET_ARCH_X87
 #include "src/x87/macro-assembler-x87.h"
 #else
 #error Unsupported target architecture.
 #endif
 
 namespace v8 {
 namespace internal {
 
+// Simulators only support C calls with up to kMaxCParameters parameters.
+static constexpr int kMaxCParameters = 9;
+
 class FrameScope {
  public:
   explicit FrameScope(MacroAssembler* masm, StackFrame::Type type)
       : masm_(masm), type_(type), old_has_frame_(masm->has_frame()) {
     masm->set_has_frame(true);
     if (type != StackFrame::MANUAL && type_ != StackFrame::NONE) {
       masm->EnterFrame(type);
     }
   }
 
@@ skipping 183 matching lines @@
     }
     return ExternalReference::new_space_allocation_limit_address(isolate);
   }
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_MACRO_ASSEMBLER_H_