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

src/compiler/c-linkage.cc

 // Copyright 2015 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.
 
 #include "src/assembler-inl.h"
 #include "src/macro-assembler.h"
 
 #include "src/compiler/linkage.h"
 
 #include "src/zone/zone.h"
@@ skipping 137 matching lines @@
 // == unknown ================================================================
 // ===========================================================================
 #define UNSUPPORTED_C_LINKAGE 1
 #endif
 }  // namespace
 
 
 // General code uses the above configuration data.
 CallDescriptor* Linkage::GetSimplifiedCDescriptor(
     Zone* zone, const MachineSignature* msig, bool set_initialize_root_flag) {
+  DCHECK_LE(msig->parameter_count(), static_cast<size_t>(kMaxCParameters));
+
   LocationSignature::Builder locations(zone, msig->return_count(),
                                        msig->parameter_count());
   // Check the types of the signature.
   // Currently no floating point parameters or returns are allowed because
   // on x87 and ia32, the FP top of stack is involved.
   for (size_t i = 0; i < msig->return_count(); i++) {
     MachineRepresentation rep = msig->GetReturn(i).representation();
     CHECK_NE(MachineRepresentation::kFloat32, rep);
     CHECK_NE(MachineRepresentation::kFloat64, rep);
   }
@@ skipping 74 matching lines @@
       0,                             // stack_parameter_count
       Operator::kNoProperties,       // properties
       kCalleeSaveRegisters,          // callee-saved registers
       kCalleeSaveFPRegisters,        // callee-saved fp regs
       flags, "c-call");
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8