Index: src/compiler/linkage.cc |
diff --git a/src/compiler/linkage.cc b/src/compiler/linkage.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..b08f6942e45b5178c0e750d7c326a4e733f39bbd |
--- /dev/null |
+++ b/src/compiler/linkage.cc |
@@ -0,0 +1,140 @@ |
+// 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/compiler/linkage.h" |
+ |
+#include "src/code-stubs.h" |
+#include "src/compiler.h" |
+#include "src/compiler/node.h" |
+#include "src/compiler/pipeline.h" |
+#include "src/scopes.h" |
+ |
+namespace v8 { |
+namespace internal { |
+namespace compiler { |
+ |
+ |
+OStream& operator<<(OStream& os, const CallDescriptor::Kind& k) { |
+ switch (k) { |
+ case CallDescriptor::kCallCodeObject: |
+ os << "Code"; |
+ break; |
+ case CallDescriptor::kCallJSFunction: |
+ os << "JS"; |
+ break; |
+ case CallDescriptor::kCallAddress: |
+ os << "Addr"; |
+ break; |
+ } |
+ return os; |
+} |
+ |
+ |
+OStream& operator<<(OStream& os, const CallDescriptor& d) { |
+ // TODO(svenpanne) Output properties etc. and be less cryptic. |
+ return os << d.kind() << ":" << d.debug_name() << ":r" << d.ReturnCount() |
+ << "p" << d.ParameterCount() << "i" << d.InputCount() |
+ << (d.CanLazilyDeoptimize() ? "deopt" : ""); |
+} |
+ |
+ |
+Linkage::Linkage(CompilationInfo* info) : info_(info) { |
+ if (info->function() != NULL) { |
+ // If we already have the function literal, use the number of parameters |
+ // plus the receiver. |
+ incoming_ = GetJSCallDescriptor(1 + info->function()->parameter_count()); |
+ } else if (!info->closure().is_null()) { |
+ // If we are compiling a JS function, use a JS call descriptor, |
+ // plus the receiver. |
+ SharedFunctionInfo* shared = info->closure()->shared(); |
+ incoming_ = GetJSCallDescriptor(1 + shared->formal_parameter_count()); |
+ } else if (info->code_stub() != NULL) { |
+ // Use the code stub interface descriptor. |
+ HydrogenCodeStub* stub = info->code_stub(); |
+ CodeStubInterfaceDescriptor* descriptor = |
+ info_->isolate()->code_stub_interface_descriptor(stub->MajorKey()); |
+ incoming_ = GetStubCallDescriptor(descriptor); |
+ } else { |
+ incoming_ = NULL; // TODO(titzer): ? |
+ } |
+} |
+ |
+ |
+FrameOffset Linkage::GetFrameOffset(int spill_slot, Frame* frame, int extra) { |
+ if (frame->GetSpillSlotCount() > 0 || incoming_->IsJSFunctionCall() || |
+ incoming_->kind() == CallDescriptor::kCallAddress) { |
+ int offset; |
+ int register_save_area_size = frame->GetRegisterSaveAreaSize(); |
+ if (spill_slot >= 0) { |
+ // Local or spill slot. Skip the frame pointer, function, and |
+ // context in the fixed part of the frame. |
+ offset = |
+ -(spill_slot + 1) * kPointerSize - register_save_area_size + extra; |
+ } else { |
+ // Incoming parameter. Skip the return address. |
+ offset = -(spill_slot + 1) * kPointerSize + kFPOnStackSize + |
+ kPCOnStackSize + extra; |
+ } |
+ return FrameOffset::FromFramePointer(offset); |
+ } else { |
+ // No frame. Retrieve all parameters relative to stack pointer. |
+ ASSERT(spill_slot < 0); // Must be a parameter. |
+ int register_save_area_size = frame->GetRegisterSaveAreaSize(); |
+ int offset = register_save_area_size - (spill_slot + 1) * kPointerSize + |
+ kPCOnStackSize + extra; |
+ return FrameOffset::FromStackPointer(offset); |
+ } |
+} |
+ |
+ |
+CallDescriptor* Linkage::GetJSCallDescriptor(int parameter_count) { |
+ return GetJSCallDescriptor(parameter_count, this->info_->zone()); |
+} |
+ |
+ |
+CallDescriptor* Linkage::GetRuntimeCallDescriptor( |
+ Runtime::FunctionId function, int parameter_count, |
+ Operator::Property properties, |
+ CallDescriptor::DeoptimizationSupport can_deoptimize) { |
+ return GetRuntimeCallDescriptor(function, parameter_count, properties, |
+ can_deoptimize, this->info_->zone()); |
+} |
+ |
+ |
+//============================================================================== |
+// Provide unimplemented methods on unsupported architectures, to at least link. |
+//============================================================================== |
+#if !V8_TURBOFAN_TARGET |
+CallDescriptor* Linkage::GetJSCallDescriptor(int parameter_count, Zone* zone) { |
+ UNIMPLEMENTED(); |
+ return NULL; |
+} |
+ |
+ |
+CallDescriptor* Linkage::GetRuntimeCallDescriptor( |
+ Runtime::FunctionId function, int parameter_count, |
+ Operator::Property properties, |
+ CallDescriptor::DeoptimizationSupport can_deoptimize, Zone* zone) { |
+ UNIMPLEMENTED(); |
+ return NULL; |
+} |
+ |
+ |
+CallDescriptor* Linkage::GetStubCallDescriptor( |
+ CodeStubInterfaceDescriptor* descriptor, int stack_parameter_count) { |
+ UNIMPLEMENTED(); |
+ return NULL; |
+} |
+ |
+ |
+CallDescriptor* Linkage::GetSimplifiedCDescriptor( |
+ Zone* zone, int num_params, MachineRepresentation return_type, |
+ MachineRepresentation* param_types) { |
+ UNIMPLEMENTED(); |
+ return NULL; |
+} |
+#endif // !V8_TURBOFAN_TARGET |
+} |
+} |
+} // namespace v8::internal::compiler |