X87: [Interpreter] Pass context to interpreter bytecode handlers and add LoadConstextSlot

src/compiler/linkage.cc

 // Copyright 2014 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/code-stubs.h"
 #include "src/compiler.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/frame.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/node.h"
@@ skipping 395 matching lines @@
   STATIC_ASSERT(3 == Linkage::kInterpreterBytecodeArrayParameter);
   types.AddParam(kMachAnyTagged);
   locations.AddParam(regloc(kInterpreterBytecodeArrayRegister));
 
   STATIC_ASSERT(4 == Linkage::kInterpreterDispatchTableParameter);
   types.AddParam(kMachPtr);
   locations.AddParam(regloc(kInterpreterDispatchTableRegister));
 
   STATIC_ASSERT(5 == Linkage::kInterpreterContextParameter);
   types.AddParam(kMachAnyTagged);
-#if defined(V8_TARGET_ARCH_IA32)
+#if defined(V8_TARGET_ARCH_IA32) || defined(V8_TARGET_ARCH_X87)
   locations.AddParam(
       LinkageLocation::ForCallerFrameSlot(kInterpreterContextSpillSlot));
 #else
   locations.AddParam(regloc(kContextRegister));
 #endif
 
   LinkageLocation target_loc = LinkageLocation::ForAnyRegister();
   return new (zone) CallDescriptor(         // --
       CallDescriptor::kCallCodeObject,      // kind
       kMachNone,                            // target MachineType
@@ skipping 87 matching lines @@
     return LinkageLocation::ForCalleeFrameSlot(spill_index);
   } else {
     // Parameter. Use the assigned location from the incoming call descriptor.
     int parameter_index = 1 + index;  // skip index 0, which is the target.
     return incoming_->GetInputLocation(parameter_index);
   }
 }
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8